#include<iostream.h>
#include<math.h>
#include<fstream.h>
 ifstream fin("energii.in");
 ofstream fout("energii.out");
long sortate,aux,aux2,n,energii[100],costuri[100],energie,i;

int main()
{
 fin>>n;
 fin>>energie;
 for(i=1;i<=n;i++)
 {
  fin>>energii[i];
  fin>>costuri[i];
 }
 /*
 do
 {
  sortate=1;
  for(i=1;i<=n-1;i++)
   if(energii[i]<energii[i+1])
   {
    sortate=0;
    aux=energii[i];
    energii[i]=energii[i+1];
    energii[i+1]=aux;
    aux2=costuri[i];
    costuri[i]=costuri[i+1];
    costuri[i+1]=aux2;
   }
  }
  while(sortate==0);
  */
  long max=0;
  long indmax=0;
  for(i=1;i<=n;i++)
   if(energii[i]>max)
   {
    max=energii[i];
    indmax=i;
   }
  fout<<costuri[indmax]<<endl;
 return 0;
}