Compilare: user.cpp: In function ‘int main()’: user.cpp:83:55: warning: ‘dy’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i = 1;i <= n;++i) ans += 2 * (a[i] == dx || b[i] == dy); ^ user.cpp:82:64: warning: ‘dx’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i = 1;i <= n;++i) ans += (a[i] > dx && b[i] > dy) || (a[i] < dx && b[i] < dy); ^