[BOJ] 백준 10610 30

[문제]

https://www.acmicpc.net/problem/10610

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Main {
    public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	List<Integer> list = new ArrayList<>();
    	String nums = br.readLine();
    	int l = nums.length();
    	int sum = 0;
    	for(int i=0;i<l;i++) {
    		int num = nums.charAt(i) - '0';
    		list.add(num);
    		sum += num;
    	}
    	list.sort((a,b)->{
    		return b - a;
    	});
    	if(sum%3==0 && list.get(l-1)==0) {
    		for(int num:list) {
    			System.out.print(num);
    		}
    	}
    	else
    		System.out.println(-1);
    }
}