Compilare: user.cpp: In function ‘void solve()’: user.cpp:16:8: warning: unused variable ‘b’ [-Wunused-variable] int b,c; ^ user.cpp:16:10: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int b,c; ^ user.cpp: In function ‘int main()’: user.cpp:27:22: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%d",&a[i]); ^