Compilare: user.cpp: In function ‘void Insert(char*)’: user.cpp:38:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<T[node].size() && !found;++i) ^ user.cpp: In function ‘void Debifez(char*)’: user.cpp:79:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<T[node].size() && !found;++i) ^ user.cpp: In function ‘void Update(char*)’: user.cpp:98:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<T[node].size() && !found;++i) ^ user.cpp: In function ‘int main()’: user.cpp:126:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sub.in","r",stdin); ^ user.cpp:127:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sub.out","w",stdout); ^ user.cpp:129:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:133:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",S); ^ user.cpp:144:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&M); ^ user.cpp:148:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",S); ^