제출 #154020

실행 실패 (제출 코드 컴파일 에러)

Main.java:18: error: incompatible types: boolean[] cannot be converted to int[]
    used = new boolean[N + 1];
           ^
Main.java:33: error: bad operand type int for unary operator '!'
      if (!used[i]) {
          ^
Main.java:34: error: incompatible types: boolean cannot be converted to int
        used[i] = true;
                  ^
Main.java:37: error: incompatible types: boolean cannot be converted to int
        used[i] = false;      
                  ^
4 errors