Compilare: main.cpp: In function 'int main()': main.cpp:27:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < fisiere[n - 1].size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ 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("search.in", "r", stdin); ^ 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("search.out", "w", stdout); ^