Compilare: user.cpp: In function ‘int main()’: user.cpp:107:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cycle.size() != m + 1) { ^ user.cpp:89:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(infile, "r", stdin); ^ user.cpp:90:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(outfile, "w", stdout); ^