Compilare: main.cpp: In function 'bool lee(int)': main.cpp:29:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < D.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:11:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.in", "r", stdin); \ ^ main.cpp:61:12: note: in expansion of macro 'FILES' FASTIO FILES ^~~~~ main.cpp:12:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.out", "w", stdout); ^ main.cpp:61:12: note: in expansion of macro 'FILES' FASTIO FILES ^~~~~