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 = 10000;
		
		for (int i=0; i<N; i++){
			int c = sc.nextInt();
			int t = sc.nextInt();
			
			if (t<=T){
				ans = Math.min(c, ans);
			}
		}
		if (ans == 10000){
			System.out.println("TLE");
			
		}
		else
			System.out.println(ans);
		
		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