Compilare: user.cpp: In function ‘void chestion(int)’: user.cpp:55:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<ps[x].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:118:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=0; p<vec[a].size(); p++) ^ user.cpp:132:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=0; p<vec[a].size(); p++) ^ user.cpp:140:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(l1<c[a].size() && l2<c[b].size()) ^ user.cpp:140:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(l1<c[a].size() && l2<c[b].size()) ^ user.cpp:96:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tribes.in","r",stdin); ^ user.cpp:97:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tribes.out","w",stdout); ^ user.cpp:99:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&k); ^ user.cpp:103:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&col[i]); ^ user.cpp:110:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^