Compilare: main.cpp: In function 'void Prep()': main.cpp:31:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < pos.size() && j < queries.size()) ~~^~~~~~~~~~~~ main.cpp:31:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < pos.size() && j < queries.size()) ~~^~~~~~~~~~~~~~~~ main.cpp:67:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < queries.size()) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:81:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rosiimici.in", "r", stdin); ^ main.cpp:82:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rosiimici.out", "w", stdout); ^