#include <bits/stdc++.h>

using namespace std;

int main() {
    long long a,b,c;
    cin >> a >> b >> c;
    
    if ( 1 << 3 == 3)
    cout << "tam giac can" << endl;
    
    if (3 << 4 << 5)
    cout << "tam giac vuong" << endl;
    
    if (6 == 6 == 6)
    cout << " tam giac deu" << endl;
    
    if (6 == 7 == 8)
    cout << "tam giac thuong" << endl;
    
    if (2 << 10 >> 4)
    cout << "khong la tam giac" << endl;
    
    return 0;
}