import java.util.*;
public class Main {
	public static void main(String[] args){
       Scanner sc = new Scanner(System.in);
      //取得
	  int N = sc.nextInt();
      int T = sc.nextInt();
      int min = 10001;
      
      for(int i=0;i<N;i++){
       int cost = sc.nextInt();
        if(sc.nextInt()<=T){
          min = Math.min(min,cost);
        }
      }
      //出力
      if(min==10001){
        System.out.println("TLE");
      }else{
        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