제출 #62024

실행 실패 (제출 코드 컴파일 에러)

Main.cpp:12:1: error: ‘unordered_set’ does not name a type
   12 | unordered_set<int> visited;
      | ^~~~~~~~~~~~~
Main.cpp: In function ‘int find(int, int)’:
Main.cpp:16:9: error: ‘visited’ was not declared in this scope
   16 |     if (visited.count(s)) return 1e9;
      |         ^~~~~~~
Main.cpp:18:5: error: ‘visited’ was not declared in this scope
   18 |     visited.insert(s);
      |     ^~~~~~~