#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
bool sortowanie(const pair<int,int> &p1,const pair<int,int> &p2)
	{
		if(p1.first != p2.first)
		return p2.first < p1.first;
		else
		return p2.second > p1.second;
	}
int main()
{
    ios_base::sync_with_stdio(0); 
    cin.tie(0);
    cout.tie(0);
 
    int ilosc_towarow;
    cin>>ilosc_towarow;
    vector<pair<int,int>> towar(ilosc_towarow);
 
	for(int i=0;i<ilosc_towarow;i++)
	cin>>towar[i].second>>towar[i].first;
 
	sort(towar.begin(),towar.end(),sortowanie);
 
	for(int i=0;i<ilosc_towarow;i++)
	cout<<towar[i].second<<' '<<towar[i].first<<endl;
}

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1 8
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8 1
6 4