/in/foo.cc: In function 'int main()':
/in/foo.cc:10:33: error: invalid types 'int[int]' for array subscript
  for(int i=1;i<=n;i++)cin>>cap[i];
                                 ^
/in/foo.cc:11:22: error: 'memset' was not declared in this scope
  memset(f,0,sizeof(f));
                      ^