import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int te = sc.nextInt();
		int c[] = new int[n];
		int t[] = new int[n];

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


		int ans = 99999;
		Boolean tle = true;
		for (int i = 0; i < n; i++) {
			if (t[i] <= te) {
				tle = false;
				if (c[i] < ans) {
					ans = c[i];
				}
			}
		}
		if (tle) {
			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