import java.util.Scanner;

public class Main {
	static Scanner sc = new Scanner(System.in);
	static int N;
	static int T;


	public static void main(String[] args) {
		N = sc.nextInt();
		T = sc.nextInt();

		int min = Integer.MAX_VALUE;
		for (int i = 0; i < N; i++) {
			int c = sc.nextInt();
			int t = sc.nextInt();

			if (t <= T) {
				min = Math.min(min, c);
			}
		}

		System.out.println(min == Integer.MAX_VALUE ? "TLE" : 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