Compilare: user.cpp: In function ‘int query(int, int, int)’: user.cpp:26:9: warning: unused variable ‘x’ [-Wunused-variable] int x = cnt[i][j], y = cnt[i][k], z = cnt[j][k]; ^ user.cpp:26:24: warning: unused variable ‘y’ [-Wunused-variable] int x = cnt[i][j], y = cnt[i][k], z = cnt[j][k]; ^ user.cpp:26:39: warning: unused variable ‘z’ [-Wunused-variable] int x = cnt[i][j], y = cnt[i][k], z = cnt[j][k]; ^