#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;
}
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