#include <bits/stdc++.h> using namespace std; struct node{ int x, y; }; bool cmp(node A, node B){ if(A.x != B.x) return A.x < B.x; else return A.y > B.y; } node T[1010]; int main(){ freopen("point.in","r",stdin); freopen("point.out","w",stdout); int n; cin>>n; for (int i = 1; i <= n; i ++){ int a, b; cin >> a >> b; T[i] = {a,b}; } sort(T+1,T+1+n,cmp); for (int i = 1; i <= n; i ++){ cout << T[i].x << " " << T[i].y << endl; } return 0; }