Compilare: user.cpp: In function ‘int main()’: user.cpp:8:29: warning: unused variable ‘a’ [-Wunused-variable] long long m, n,nrmutari=0,a,b; ^ user.cpp:8:31: warning: unused variable ‘b’ [-Wunused-variable] long long m, n,nrmutari=0,a,b; ^