[백준, BOJ 15664] N과 M (10) (java)

https://www.acmicpc.net/problem/15664메모리: 14,308  KB , 시간: 104 ms사용 알고리즘: 백트래킹, 자료 구조import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.Arrays;import java.util.HashSet;import java.util.Set;import java.util.StringTokenizer;public class Main { static int N, M; static int[] arr; static Set set; static int[] combi; static StringBuilder answer; public st..