import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int T = scan.nextInt();
		int[]c = new int[N];
		int[]t = new int[N];
		for(int i = 0; i < N; i++) {
			c[i] = scan.nextInt();
			t[i] = scan.nextInt();
		}
		scan.close();
		int min = Integer.MAX_VALUE;
		for(int i = 0; i < N; i++) {
			if(t[i] <= T) {
				min = Math.min(min, c[i]);
			}
		}
		if(min != Integer.MAX_VALUE) {
			System.out.println(min);
		}else {
			System.out.println("TLE");
		}
	}
}
/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