#include <iostream>
#include <iomanip>
#include<cmath>
using namespace std;
/*
//Zadanie 1
int main() {
    float A, B;
    cin >> A >> B;
 
    float iloraz = A / B;
 
    cout << fixed << setprecision(4) << iloraz;
 
    return 0;
} 
//Zadanie 2
int main() {
	int g, n, P, K;
	cin>>g;
	cin>>n;
	P=(n-2*g)/2;
	K=g-P;
	cout<<"Psy:"<<P<<"Kaczki:"<<K;
	return 0;
}
 
//Zadanie 3
int main(){
	int l, u, m;
	cin>>l;
	cin>>u;
	cin>>m;
	int j=(l-u)/m;
	cout<<j;
}
 
//Zadanie 4
int main(){
    int md, m, n, mp;
    cin >> n >> mp;
    m = (mp - 2 * n) / 3;
    md = n - m;
    cout << "monety dwuzlotowe: " << md << endl;
    cout << "monety pieciozlotowe: " << m << endl;
    return 0;
}
 
//Zadanie 5
int main(){
	int n, m, k, t;
	cin>>n>>m>>k>>t;
	cout<<(n*m+k)-t;
	return 0;
}
 
//Zadanie 6
int main(){
	int n, p, l, m;
	cin>>n>>p>>m>>l;
	cout<<p+l-(n-m);
	return 0;
}
 
//Zadanie 7
int main(){
	int u, n, s;
	cin>>u>>n>>s;
	float c=s/(u/2.0+n);
	cout<<fixed<<setprecision(2)<<c;
	return 0;
}
 
//Zadanie 8
int main(){
	int A, B, C;
	cin>>A>>B>>C;
	float x=-B/(2.0*A);
	int delta=B*B-4*A*C;
	float y=-delta/4*A;
	cout<<fixed<<setprecision(2)<<x<<y;
	return 0;
}
 
//Zadanie 9
int main(){
	int w;
	cin>>w;
	int k=3*w/2;
	int s=w/2+2;
	cout<<"krawedzie:"<<k<<endl;
		cout<<"sciany:"<<s;
}
 
//Zadanie 10
int main(){
	int A, B, C, D, E, F;
	cin>>A>>B>>C>>D>>E>>F;
	float w=A*E-B*D;
	float WX=C*E-B*F;
	float WY=A*F-C*D;
	cout<<fixed<<setprecision(3);
	cout<<"x="<<WX/w<<endl;
	cout<<"y="<<WY/w<<endl;
	return 0;
}
 
//Zadanie 11
int main(){
	float a, b;
	cin>>a>>b;
	float c=sqrt(a*a+b*b);
	cout<<fixed<<setprecision(4)<<c;
	return 0;
}
 
//Zadanie 12
int main(){
	float w, p;
	cin>>w;
	p=w*(w-3)/2;
	cout<<p;
	return 0;
}
 
//Zadanie 13
int main(){
	int a, b, c, d;
	cin>>a>>b>>c>>d;
	cout<<"iloczyn="<<a*b*c*d;
}
 
//Zadanie 14
int main(){
	float a, h;
	cin>>a>>h;
	float p=a*h/2;
	cout<<"Pole trojkata o wymiarach "<<a<<" i "<<h<<"wynosi "<<p;
}
 
//Zadanie 15
int main(){
	float a, b;
	cin>>a>>b;
	float srednia=(a+b)/2;
	float geometryczna=sqrt(a*b);
	float harmoniczna=2/(1/a+1/b);
	cout<<fixed<<setprecision(2);
	cout<<srednia<<" "<<geometryczna<<" "<<harmoniczna;
	return 0;
}
 
//Zadanie 16
int main(){
	int a, b, c;
	cin>>a>>b>>c;
	int obw=a+b+c;
	int p=obw/2;
	int P=sqrt(p*(p-a)*(p-b)*(p-c));
	cout<<"Pole trojkata o bokach "<<a<<" "<<b<<" "<<c<<" wynosi "<<P<<" Jego obwod jest rowny "<<obw;
	return 0;
}
 
//Zadanie 17
int main(){
	float a, b, c;
	cin>>a>>b>>c;
	float v=a*b*c;
	cout<<fixed<<setprecision(4)<<"Objetosc prostopadloscianu "<<v;
	return 0;
}
 
//Zadanie 18
int main(){
	int c, n;
	cin>>c>>n;
	float p=n*1.0/(c+n);
	cout<<fixed<<setprecision(3)<<p;
	return 0;
}*/

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