#include <iostream>
using namespace std;
int main() {
cout<<"entrer le nombre de le triangle;"<<endl;
double a,b,c;
cin>>a>>b>>c;
    if (a==b or b==c or a==c){
        cout<<"triangle isocellle"<<endl;
    }
else {
    cout<<"non isocelle"<<endl;
}


    return 0;
}