#include <iostream>
#include<fstream>

using namespace std;
ifstream f("date.in");
ofstream g("date.out");
int n,i,j,aux,aux2;
int a[150000],b[150000];
void citire()
{
    f>>n;
    for(i=1;i<=n;i++){
        f>>a[i];
        f>>b[i];
    }
}
int main()
{
    citire();
    for(i=1;i<n;i++){
        for(j=i+1;j<=n;j++){
            if(b[i]<b[j]){
                aux=b[i];
                b[i]=b[j];
                b[j]=aux;
                aux2=a[i];
                a[i]=a[j];
                a[j]=aux2;
            }
        }
    }
    for(i=1;i<=n;i++){
        g<<a[i]<<" "<<b[i]<<'\n';
    }
    return 0;
}