int a,b,c;
cin >> a;
cin >> b;
cin >> c;
if ( (a + b + c ) % 3 >= 8 ) cout << " GIOI ";
if ( ( a + b + c ) % 3 >= 6.5 && ( a + b + c ) % 3 < 8 ) cout << " KHA BANH";
if ( ( a + b + c ) % 3 >= 5 && ( a + b + c ) % 3 < 6.5 ) cout << " TRUNG BINH ";
if ( ( a + b + c ) % 3 < 5 ) cout << " YEU ";