(LightOj) 1433 – Minimum Arc Distance

Posted on February 17, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here



#define sq(x) ((x)*(x))



void init()
{

}


struct Point{
    double x, y;

    double operator-(const Point &P) const
    {
        return sqrt(sq(this->x - P.x) + sq(this->y - P.y));
    }

};


int main()
{
    init();

    int kases, kaseno = 0;

    Point O, A, B;

    cin>>kases;

    while(kases--)
    {
        cin>>O.x>>O.y>>A.x>>A.y>>B.x>>B.y;

        double r = O - A;

        double p = A - B;

        double theta = 1.0 - (sq(p)/(2.0*sq(r)));

        theta = acos(theta);

        double s = r * theta;

        pf("Case %d: %.6lf\n", ++kaseno, s);


    }



    return 0;
}

(LightOj) 1178 – Trapezium

Posted on February 17, 2015 by Hasib Al Muhaimin

/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here




void init()
{

}


int main()
{
    init();

    int kases, kaseno = 0;

    cin>>kases;

    double a, b, c, d;

    while(kases--)
    {
        cin>>a>>b>>c>>d;

        if(a>c) swap(a, c);

        double s = (b + d + c - a)/2.0;


        double area = sqrt(s * (s - b) * (s - d) *(s - c + a));

        double h = (2*area) / (c - a );

        area = area + a*h;

        pf("Case %d: %.7lf\n",++kaseno, area);
    }



    return 0;
}

(LightOj) 1331 – Agent J

Posted on February 16, 2015 by Hasib Al Muhaimin


#include<iostream>
#include<cmath>
#include<cstdio>
#define PI acos(-1.0)

double cosInverse(double angle)
{
    return acos(angle) * 180.0 / PI;
}
using namespace std;
int main()
{
    int cases, caseno = 0;
    double a, b, c, angleA, angleB, angleC, fullArea;
    cin>>cases;
    while(cases--)
    {
        cin>>a>>b>>c;
        angleC = (a*(a+b+c) - b*c) / (a*(a+b+c) + b*c);
        angleC = cosInverse(angleC);
        angleB = (b*(a+b+c) - a*c) / (b*(a+b+c) + a*c);
        angleB = cosInverse(angleB);
        angleA = 180.0 - angleB - angleC;


        fullArea = 0.5 * (a+c) * (a+b) * sin(angleC * PI/180.0);
        fullArea -= (PI*a*a)*angleC/360.0;
        fullArea -= (PI*b*b) * angleB / 360.0;
        fullArea -= (PI*c*c) * angleA / 360.0;
        printf("Case %d: %.9lf\n", ++caseno, fullArea);

    }
    return 0;
}

(UVA) 11909 – Soya Milk

Posted on February 16, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here


#define toRadian(x) ((x) * PI / 180.0)

void init()
{

}


int main()
{
    init();

    double l, h, w, theta;

    while(cin>>l>>w>>h>>theta)
    {
        double tmp = atan(h/l);

        double ret = 0;

        if(toRadian(theta)> tmp)
        {
            //dump(true);
            theta = 90.0 - theta;

            swap(h, l);

            ret = w*0.5*l*l*tan(toRadian(theta));
        }
        else
        {
            ret = w * (l*h - 0.5*l*l*tan(toRadian(theta)));
        }


        if(l == 0 || h == 0 || w == 0)
        {
            ret = 0;
        }

        pf("%.3lf mL\n", ret);
    }



    return 0;
}

(UVA) 11579 – Triangle Trouble

Posted on February 16, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here


#define MAXX 10007


void init()
{

}


int main()
{
    init();

    int kases, N;

    double len[MAXX];

    take(kases);

    while(kases--)
    {
        take(N);

        loop(i, N)
        {
            take(len[i]);
        }

        sort(len, len + N);

        reverse(len, len + N);

        double max_area = 0;

        loop(i, N)
        {
            int j = i + 1;
            int k = j + 1;
            if(k>=N)
            {
                break;
            }

            if(len[i] < len[j] + len[k])
            {
                double s = (len[i] + len[j] + len[k]) / 2.0;

                double area = sqrt(s*(s - len[i])*(s - len[j]) * (s - len[k]));

                max_area = max(max_area, area);

                //break;
            }




        }

        pf("%.2lf\n", max_area);
    }



    return 0;
}

(UVA) 10991 – Region

Posted on February 16, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here




void init()
{

}

#define sq(x) (x*x)
#define toDegree(x) ((x) * 180/PI)


int main()
{
    init();

    int kases;
    double r1, r2, r3;

    sf("%d", &kases);

    while(kases--)
    {
        sf("%lf %lf %lf", &r1, &r2, &r3);


        double s = r1 + r2 + r3;

        double area = sqrt(s*r1*r2*r3);

        double a = r2 + r3;
        double b = r1 + r3;
        double c = r1 + r2;

        double A = (sq(b) + sq(c) - sq(a)) / (2*b*c);

        A = acos(A);

        A = toDegree(A);

        double B = ( sq(a) + sq(c) - sq(b) ) / (2*a*c);

        B = acos(B);

        B = toDegree(B);

        double C = (sq(a) + sq(b) - sq(c)) / (2*a*b);

        C = acos(C);

        C = toDegree(C);

        area = area - (PI*r1*r1 * (A/360.0)) - (PI*r2*r2* (B/360.0)) - (PI*r3*r3*(C/360.0));

        pf("%.6lf\n", area);

    }



    return 0;
}

(UVA) 10283 – The Kissing Circles

Posted on February 16, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here


#define SIN(a) (sin(((a)*PI)/180.0))


double R, r, N;




void init()
{

}


int main()
{
    init();

    while(cin>>R>>N)
    {
        if(N == 1)
        {
            pf("%.10lf %.10lf %.10lf\n", R, 0.0, 0.0);
        }
        else
        {
            double theta = 360.0 / N;

            double halfTheta = theta/2.0;

            r = (R * SIN(halfTheta)) / (1 + SIN(halfTheta));

            double blue = 0.5*(R-r)*r*SIN(90.0 - halfTheta);

            blue = blue - (PI*r*r*(180.0 - theta)/720.0);

            blue = blue*N*2.0;


            double green = (PI*R*R) - blue - N*PI*r*r;


            pf("%.10lf %.10lf %.10lf\n", r, blue, green);

        }
    }





    return 0;
}

(UVA) 11936 – The Lazy Lumberjacks

Posted on February 15, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here




void init()
{

}


int main()
{
    init();

    int kases, a[3];

    cin>>kases;

    while(kases--)
    {
        loop(i, 3) cin>>a[i];

        sort(a, a+3);
        if(a[0] + a[1] <= a[2])
        {
            pf("Wrong!!\n");
        }
        else
        {
            pf("OK\n");
        }
    }



    return 0;
}

(UVA) 11854 – Egypt

Posted on February 15, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here




void init()
{

}

template<typename T>
T sq(T &x)
{
    return x*x;
}




int main()
{
    init();


    ll A[3];

    while(cin>>A[0]>>A[1]>>A[2])
    {
        if(A[0] == 0 && A[1] == 0 && A[2] == 0)
        {
            break;
        }

        sort(A, A + 3);

        if(sq(A[2]) == sq(A[0]) + sq(A[1]))
        {
            pf("right\n");
        }
        else
        {
            pf("wrong\n");
        }
    }



    return 0;
}

(UVA) 190 – Circle Through Three Points

Posted on February 15, 2015 by Hasib Al Muhaimin


/****************************************************************
   ▄█    █▄       ▄████████    ▄████████  ▄█  ▀█████████▄
  ███    ███     ███    ███   ███    ███ ███    ███    ███
  ███    ███     ███    ███   ███    █▀  ███   ███    ███
 ▄███▄▄▄▄███▄▄   ███    ███   ███        ███  ▄███▄▄▄██▀
▀▀███▀▀▀▀███▀  ▀███████████ ▀███████████ ███ ▀▀███▀▀▀██▄
  ███    ███     ███    ███          ███ ███    ███    ██▄
  ███    ███     ███    ███    ▄█    ███ ███    ███    ███
  ███    █▀      ███    █▀   ▄████████▀  █▀   ▄█████████▀
****************************************************************/



#include<bits/stdc++.h>


#define FOR(i, s, e) for(int i=s; i<e; i++)
#define loop(i, n) FOR(i, 0, n)
#define sf scanf
#define pf printf
#define pb push_back
#define MP make_pair
#define fr first
#define sc second
#define ll long long
#define dd double
#define all(v) v.begin(), v.end()
#define PI acos(-1.0)
#define mem(ara, value) memset(ara, value, sizeof(ara))
#define paii pair<int, int>
#define pall pair<ll, ll>
#define SZ(a) int(a.size())
#define read(nm) freopen(nm, "r", stdin)
#define write(nm) freopen(nm, "w", stdout)

#define take(args...) asdf,args
#define dump(x) cerr<<#x<<" = "<<x<<endl
#define debug(args...) cerr,args; cerr<<endl;
using namespace std;


template<typename T>
ostream& operator<<(ostream& output, vector<T>&v)
{
    output<<"[ ";
    if(SZ(v))
    {
        output<<v[0];
    }
    FOR(i, 1, SZ(v))
    {
        output<<", "<<v[i];
    }
    output<<" ]";
    return output;
}

template<typename T1, typename T2>
ostream& operator<<(ostream& output, pair<T1, T2>&p)
{
    output<<"( "<<p.fr<<", "<<p.sc<<" )";
    return output;
}




template<typename T>
ostream& operator,(ostream& output, T x)
{
    output<<x<<" ";
    return output;
}



struct ASDF{
    ASDF& operator,(int &a) {
        sf("%d", &a);
        return *this;
    }
    ASDF& operator,(long int &a){
        sf("%ld", &a);
        return *this;
    }
    ASDF& operator,(long long int &a){
        sf("%lld", &a);
        return *this;
    }
    ASDF& operator,(char &c){
        sf("%c", &c);
        return *this;
    }
    ASDF& operator,(double &d){
        sf("%lf", &d);
        return *this;
    }

    template<typename T>
    ASDF& operator,(T &a){
        cin>>a;
        return *this;
    }
}asdf;



//Header ends here


class Point{
public:
        double x, y;

        Point operator-(Point A)
        {
            Point ret;
            ret.x = this->x - A.x;
            ret.y = this->y - A.y;
            return ret;
        }

};

double sq(double x)
{
    return x*x;
}


double dist(Point A, Point B)
{
    double ret = sq(A.x - B.x) + sq(A.y - B.y);
    return sqrt(ret);
}






void init()
{

}


int main()
{
    init();


    Point A, B, C;

    while(cin>>A.x>>A.y>>B.x>>B.y>>C.x>>C.y)
    {
        double a, b, c;
        a = dist(A, B);
        b = dist(A, C);
        c = dist(B, C);

        double s = (a + b + c)/2.0;

        double area = sqrt( s * (s - a) * (s - b) * (s - c) );

        double R = (a*b*c)/(4*area);

        double AA, BB, CC, DD, PP, QQ, RR, h, k;

        AA = 2*(B.x - A.x);
        BB = 2*(B.y - A.y);
        CC = sq(B.x) + sq(B.y) - sq(A.x) - sq(A.y);

        PP = 2*(C.x - A.x);
        QQ = 2*(C.y - A.y);
        RR = sq(C.x) + sq(C.y) - sq(A.x) - sq(A.y);

        h = (CC*QQ - BB*RR)/(AA*QQ - BB*PP);
        k = (CC*PP - AA*RR)/(BB*PP - AA*QQ);

        pf("(x %c %.3lf)^2 + (y %c %.3lf)^2 = %.3lf^2\n", h>=0? '-' : '+', abs(h), k>=0? '-': '+', abs(k), R);
        pf("x^2 + y^2 %c %.3lfx %c %.3lfy %c %.3lf = 0\n\n", h>=0 ? '-' : '+' , abs(2*h), k>=0? '-' : '+', abs(2*k), sq(h) + sq(k) >= sq(R) ? '+' : '-', abs(sq(h) + sq(k) - sq(R)) );

    }



    return 0;
}

UnLucky Codes

Focus Not On Your Past, But On Your Present!

Category Archives: Geometry

(LightOj) 1433 – Minimum Arc Distance

(LightOj) 1178 – Trapezium

(LightOj) 1331 – Agent J

(UVA) 11909 – Soya Milk

(UVA) 11579 – Triangle Trouble

(UVA) 10991 – Region

(UVA) 10283 – The Kissing Circles

(UVA) 11936 – The Lazy Lumberjacks

(UVA) 11854 – Egypt

(UVA) 190 – Circle Through Three Points