Compilare: user.cpp: In function ‘int main()’: user.cpp:56:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<=s.size();++j){ ^ user.cpp:57:72: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s[j]==' ' || j==s.size()){ ^ user.cpp: In function ‘void openIOFiles()’: user.cpp:19:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("senat.in","r",stdin); ^ user.cpp:20:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("senat.out","w",stdout); ^ user.cpp: In function ‘int main()’: user.cpp:52:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^