import java.util.*;
import java.lang.*;
import java.io.*;

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 p = 1001;
		for (int i = 0; i < N; i++) {
			c[i] = sc.nextInt();
			t[i] = sc.nextInt();
		}
		for (int i = 0; i < N; i++) {
			if ((t[i] <= T) && (c[i] < p)) {
				p = c[i];
			}
		}
		if (p == 1001) {
			System.out.println("TLE");
		}else{
			System.out.println(p);
		}
	}
}
/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