제출 #81013

실행 실패 (제출 코드 컴파일 에러)

Main.cpp: In function ‘int main()’:
Main.cpp:21:19: error: ‘std::vector<std::pair<int, std::__cxx11::basic_string<char> > >::iterator’ has no member named ‘first’
   21 |   sort(xy.begin().first, xy.end().first, compare);
      |                   ^~~~~
Main.cpp:21:35: error: ‘std::vector<std::pair<int, std::__cxx11::basic_string<char> > >::iterator’ has no member named ‘first’
   21 |   sort(xy.begin().first, xy.end().first, compare);
      |                                   ^~~~~