:)

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(" "); int cnt = 0; for (int i = 0; i < arr.length; i++) { if (!arr[i].isEmpty()) { cnt++; } } if (arr.length == 0) { System.out.println(0); ..