#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
while(cin>>n)
{
int id[100],score[100];
for(int i = 0;i<n;i++)
{
cin>>id[i]>>score[i];
}
for(int i = 0;i<n-1;i++)
{
for(int j = 0;j<n-i-1;j++)
{
if(score[j]>score[j+1]||(score[j] == score[j+1]&&id[j]>id[j+1]))
{
int temp1 = score[j];
score[j] = score[j+1];
score[j+1] = temp1;
int temp2 = id[j];
id[j] = id[j+1];
id[j+1] = temp2;
}
}
}
for(int i = 0;i<n;i++)
{
cout<<id[i]<<" "<<score[i]<<endl;
}
}
return 0;
}



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