BOJ11651.java

package ¹éÁØ;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;

public class BOJ11651 {
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st;
		int N = Integer.parseInt(br.readLine());
		int[][] arr = new int[N][2];
		
		for(int i = 0; i < N; i++) {
			st = new StringTokenizer(br.readLine());
			arr[i][0] = Integer.parseInt(st.nextToken());
			arr[i][1] = Integer.parseInt(st.nextToken());
		}
		
		Arrays.sort(arr, (s1, s2) -> {
			if(s1[1] == s2[1]) return s1[0] - s2[0];
			else return s1[1] - s2[1];
		});
		
		for(int i = 0; i<N; i++) {
			System.out.println(arr[i][0] +" "+ arr[i][1]);
		}
	}
}