Compilare: user.cpp: In function ‘int main()’: user.cpp:81:51: warning: ‘dy’ 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); ^ user.cpp:81:80: 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); ^