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 t2 = sc.nextInt();
			if(t2 <= t){
				ans = Math.min(ans, c);
			}
		}
		if(ans >= 10000){
			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