View Compilation Error

0_0_39758580_27059.cpp: In function 'void solve()':
0_0_39758580_27059.cpp:30:18: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'top'
   30 |     ans += int(s.top());
      |                  ^~~