import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int T = sc.nextInt();

		int ans = 100000007;

		for (int i = 0; i < n; i++) {
			int c = sc.nextInt();
			int t = sc.nextInt();

			if (t <= T) {
				if (c < ans) {
					ans = c;
				}
			}

		}
		if (ans > 1000) {
			System.out.println("TLE");

		} else {

			System.out.println(ans);
		}

	}
}

/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