Compilare: main.cpp: In function 'int main()': main.cpp:65:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < queries.size(); ++i) ~~^~~~~~~~~~~~~~~~ main.cpp:28:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("distincte.in", "r", stdin); ^ main.cpp:29:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("distincte.out", "w", stdout); ^