#include <iostream>
using namespace std;

int main() {
    int x;
    cout<<"enter 1st side = "<<endl;
    cin>>x;
        int y;
    cout<<"enter 2nd side = "<<endl;
    cin>>y;
    int z;
    cout<<"enter 3rd side = "<<endl;
    cin>>z;
    if (x==0|| y==0 || z==0) { cout<<"cant form a triangle"<<endl;
        
    }
    else if (x+y>z || y+z>x || x+z>y) { 
        cout<<"given numbers can form a triangle"<<endl;
    }
       else cout<<"given numbers can't form a triangle";
}