/in/foo.cc: In function 'bool JUDGE(int)':
/in/foo.cc:10:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<V.size(); i++) 
                  ~^~~~~~~~~
/in/foo.cc: In function 'int GET(int, int, int)':
/in/foo.cc:21:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<V.size(); i++) Fa[pot][v=V[i]]=1;
                  ~^~~~~~~~~
/in/foo.cc:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<E[pot].size(); i++) 
                  ~^~~~~~~~~~~~~~
/in/foo.cc: In function 'int FIND(int)':
/in/foo.cc:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<Dep[dep].size(); i++) 
                  ~^~~~~~~~~~~~~~~~
/in/foo.cc: At global scope:
/in/foo.cc:57:1: error: 'Copy' does not name a type
 Copy
 ^~~~