Compilare: user.cpp: In function ‘int main()’: user.cpp:44:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m[*it].size();j++) ok[ m[*it][j] ]=1; ^ user.cpp:59:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m[nod].size();j++) ^ user.cpp:21:9: warning: unused variable ‘tribcrt’ [-Wunused-variable] int tribcrt,nod; ^ user.cpp:22:35: 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:23:37: 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:24:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m1,&k); ^ user.cpp:27:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&trib[i]); ^ user.cpp:32:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^