Compilare: user.cpp: In function ‘int main()’: user.cpp:40:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (stare & (1<<j) && OK[i][j]) ^ user.cpp:13:18: warning: unused variable ‘nr’ [-Wunused-variable] int m, n, e, nr = 0, maxim = 0; ^~ user.cpp:13:26: warning: unused variable ‘maxim’ [-Wunused-variable] int m, n, e, nr = 0, maxim = 0; ^~~~~