#include<iostream> 
using namespace std; 
 
int main() 
{ 
    int a, b, c; 
     
    cout<<"Unesite a: "; 
    cin>>a; 
    cout<<"Unesite b: "; 
    cin>>b; 
    cout<<"Unesite c: "; 
    cin>>c; 
     
    if(a*a == b*b + c*c) 
            cout<<"Trougao jeste pravougli."<<endl; 
    else if(b*b == a*a + c*c) 
            cout<<"Trougao jeste pravougli."<<endl; 
    else if(c*c == a*a + b*b) 
            cout<<"Trougao jeste pravougli."<<endl; 
    else 
            cout<<"Trougao nije pravougli."<<endl; 
             
    system("pause"); 
    return 0; 
}