import java.util.*;
public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      int n = sc.nextInt();
      int T = sc.nextInt();
      int[] c = new int[n];
      int[] t = new int[n];
      int min = 100000;
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        t[i] = sc.nextInt();
        if(t[i] > T) c[i] = 10000;
        min = Math.min(min,c[i]);
      }
      if(min >= 10000)System.out.println("TLE");
      else if(min <= 1000)System.out.println(min);
    }
}

/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