Compilare: user.cpp: In function ‘int main()’: user.cpp:37:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<V.size(); i++) { ^ user.cpp:42:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<V.size(); i++) { ^ user.cpp:23:13: warning: unused variable ‘sum’ [-Wunused-variable] int64_t sum = 0; ^ user.cpp:12:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rotatii.in", "r", stdin); ^ user.cpp:13:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rotatii.out", "w", stdout); ^