:)

문제 코드 import java.io.BufferedReader; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String[] arr = br.readLine().split(""); System.out.println(arr.length); } } 출처 https://www.acmicpc.net/problem/2743