Compilare: main.cpp: In function 'int main()': main.cpp:6:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("zzid.in", "r", stdin) ; ^ main.cpp:7:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("zzid.out", "w", stdout) ; ^ main.cpp:33:45: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] std::cout << H - maxx << ' ' << abs(W - 2 * poz) ; ~~^~~~~