[BOJ 11650]

[BOJ 11650]

#define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <algorithm>
#include <vector>

using namespace std;
vector<pair<int, int>> vec;

int main(void) {
	int n,x,y;
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		scanf("%d%d", &x, &y);
		vec.push_back(make_pair(x, y));
	}
	sort(vec.begin(), vec.end());
	for (int i = 0; i < n; i++) {
		printf("%d %d\n", vec[i].first, vec[i].second);
	}
}