Compilare: user.cpp: In function ‘bool Check(int)’: user.cpp:15:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < d.size(); ++i) ^ user.cpp: In function ‘void Update(int, int)’: user.cpp:40:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < d.size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:88:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("randomizare.in", "r", stdin); ^ user.cpp:89:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("randomizare.out", "w", stdout); ^ user.cpp:91:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:94:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ user.cpp:97:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &p[i]); ^ user.cpp: In function ‘void SolveCycle(int)’: user.cpp:79:25: warning: ‘answer’ may be used uninitialized in this function [-Wmaybe-uninitialized] Update(length, answer); ^ user.cpp:82:21: warning: ‘start’ may be used uninitialized in this function [-Wmaybe-uninitialized] start = p[start]; ^