/in/foo.cc: In function 'bool cmp(node, node)':
/in/foo.cc:18:12: error: 'struct node' has no member named 'sum'; did you mean 'num'?
   return x.sum<y.sum;
            ^~~
/in/foo.cc:18:18: error: 'struct node' has no member named 'sum'; did you mean 'num'?
   return x.sum<y.sum;
                  ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:40:9: error: 'tot' was not declared in this scope
         tot+=a[i].jxj;
         ^~~
/in/foo.cc:43:41: error: 'tot' was not declared in this scope
  cout<<a[1].name<<endl<<a[1].jxj<<endl<<tot;
                                         ^~~