Compilare: user.cpp: In function ‘void echilibrare()’: user.cpp:27:12: warning: statement has no effect [-Wunused-value] a[2][1]==a[1][2]; ^ user.cpp: In function ‘int main()’: user.cpp:73:15: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%d",&n); ^