Compilare: main.cpp: In function 'int main()': main.cpp:22:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (s.size() < q && j < n) ~~~~~~~~~^~~ main.cpp:25:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s.size() == p) { ~~~~~~~~~^~~~ main.cpp:30:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s.size() >= p) { ~~~~~~~~~^~~~ 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("lautari.in", "r", stdin); ^ main.cpp:8:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("lautari.out", "w", stdout); ^