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];
      for (int i=0; i<N; i++) {
        c[i] = sc.nextInt();
        t[i] = sc.nextInt();
      }
      int min =10000;
      for (int i=0; i<N; i++) {
        if (t[i] <= T) {
          min = Math.min(c[i],min);
        }
      }
      if (min == 10000) {
        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