View Compilation Error

0_0_39291828_5484.cpp: In member function 'void Trie::insert(std::string&)':
0_0_39291828_5484.cpp:42:17: error: no 'operator++(int)' declared for postfix '++' [-fpermissive]
   42 |         isend[p]++;
      |         ~~~~~~~~^~
0_0_39291828_5484.cpp: In function 'void solve()':
0_0_39291828_5484.cpp:85:18: error: 'class Trie' has no member named 'query'
   85 |         cout<<tr.query(st)<<endl;
      |                  ^~~~~