// vypocet delky prepony
#include<iostream>
#include<cmath> 
using namespace std;
int main(void){	
  double a,b,c;
  cout << "Zadej delku strany a: ";	// opise retezec
  cin >> a;				// ulozi prectene cislo do promenne "a"
  cout << "Zadej delku strany b: ";	
  cin >> b;
  c = sqrt(a*a+b*b);			//vypocet delky prepony
  cout << "Delka prepony je " << c << " metru." << endl;
}