Compilare: user.cpp: In function ‘int main()’: user.cpp:58:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( solutie.size() < N - 1 ) ^ user.cpp:42:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mesaj4.in", "r", stdin); ^ user.cpp:43:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mesaj4.out", "w", stdout); ^