Compilare: user.cpp: In function ‘void fixComponent(int)’: user.cpp:29:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < badDeg.size() / 2; i++) { ^ user.cpp: In function ‘std::vector<std::pair<int, int> > findCycle(int)’: user.cpp:41:19: warning: unused variable ‘i’ [-Wunused-variable] const int i = S.top().second; ^ user.cpp: In function ‘std::vector<std::vector<int> > cycToPaths(const std::vector<std::pair<int, int> >&)’: user.cpp:60:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < eCyc.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:83:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("johnie.in", "r", stdin); ^ user.cpp:84:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("johnie.out", "w", stdout); ^ user.cpp:86:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:89:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &u, &v); ^