c#include <bits/stdc++.h> using namespace std; int main(){ cin.tie(NULL); cout.tie(NULL); ios_base::sync_with_stdio(false); int N; cin >> N; vector<pair<int, int>> points; for(int i = 0; i < N; i++){ int x, y; cin >> x >> y; points.push_back(make_pair(y, x)); } sort(points.begin(), points.end()); for(int i = 0; i < N; i++){ cout << points[i].second << " " << points[i].first << "\n"; } return 0; }```