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 cost[] = new int[N];
        int time[] = new int[N];
        int i;
        int result = 0;
        for(i = 0;i < N; i++){
          cost[i] = sc.nextInt();
          time[i] = sc.nextInt();
          if(time[i] <= T){
            if(result > cost[i] || result == 0){
                result = cost[i];
            }
          }
        }
      	if(result == 0){
           System.out.println("TLE");   
        }else{
     	   System.out.println(result);   
        }
    }
}
/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