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[] cn = new int[n];
		int[] tn = new int[n];

		int minCost = 1001;

		for (int i=0; i<n; i++) {
			cn[i] = sc.nextInt();
			tn[i] = sc.nextInt();

			if (tn[i] <= t) {
				if (cn[i] < minCost) {
					minCost = cn[i];
				}
			}
		}

		if (minCost == 1001) {
			System.out.println("TLE");
		} else {
			System.out.println(minCost);
		}

		sc.close();
	}

}
/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