Compilare: user.cpp: In function ‘void alignCycle(const std::vector<int>&, const std::vector<int>&)’: user.cpp:42:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < fiCyc.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:71:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < c[0].size(); i++) { ^ user.cpp:48:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("transform2.in", "r", stdin); ^ user.cpp:49:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("transform2.out", "w", stdout); ^ user.cpp:51:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:58:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &u, &v); ^