Compilare: user.cpp: In function ‘void insert(std::string, std::vector<int>&)’: user.cpp:34:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<w.length();++i) ^ user.cpp: In function ‘int prefix(std::string)’: user.cpp:56:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<w.length(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:79:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[2005]’ [-Wformat=] scanf("%s", &aux); ^ user.cpp:103:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[x].size()<lgmin) lgmin=v[x].size(); ^ user.cpp:116:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<cuv.size();++k) ^ user.cpp:68:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ratina.in","r",stdin); ^ user.cpp:69:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ratina.out","w",stdout); ^ user.cpp:73:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:74:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ user.cpp:79:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &aux); ^ user.cpp:92:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &nrq); ^ user.cpp:100:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^