Compilare: user.cpp: In function ‘int main()’: user.cpp:7:39: warning: ‘nr’ may be used uninitialized in this function [-Wmaybe-uninitialized] #define For(i, x, y) for(int i = x; i <= y; ++i) ^ user.cpp:30:23: note: ‘nr’ was declared here long long x, sum, nr, ok = 0, m = n; ^ user.cpp:48:36: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] nr = (e - n + 1) / (sum - x); ^