import java.util.*;

class Main{
  public static void main(String[] args){
     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     int T=sc.nextInt();

     int answer=1001;
     for(int i=0;i<n;i++){
       int c=sc.nextInt();
       int t=sc.nextInt();
       if(c<answer&&t<=T){
         answer=c;
       }
     }
     System.out.println(answer!=1001?answer:"TLE");
  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz