#include <stdlib.h>
#include <stdio.h>
#include <iostream.h>
long res[101];

struct p
{
   long id;
   int m;
};


int main()
{

  long n;
  cin>>n;
  p* mas =new p[n];
  for (long h =0;h<n;h++)

    cin>>mas[h].id>>mas[h].m;

  for (int j=0;j<=102;j++)
     res[j]=0;
  long kol=0;
  for (long h=0;h<n;h++)
      res [mas[h].m]++;
  int j;
  for (j=100;j>=0;j--)
    if (res[j])
      break;
  int y=1;
  for (int k=j;k>=0;k--)
    {
       if (res [k])
     {
                 for (long y=0;y<n;y++)
                    if (mas[y].m==k)
                     {
                      printf("%ld ",mas[y].id);
                      cout<<k<<endl ;
                      res[k]--;
                      if (res[k]==0) break;
                     }
     }
    }
delete [] mas;
return 0;
}