Compilare: user.cpp: In member function ‘void SuffixArray::init(char*, int)’: user.cpp:46:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1; j < aux.size(); j++) { ^ user.cpp: In function ‘int main()’: user.cpp:201:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < order.size(); i++) ^ user.cpp:188:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("revsecv.in","r",stdin); ^ user.cpp:189:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("revsecv.out","w",stdout); ^ user.cpp:191:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s + 1); ^