import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int t = sc.nextInt();
		
		int res = 9999;
		for (int i=0;i<n;i++) {
			int ci = sc.nextInt();
			int ti = sc.nextInt();
			if (ti <= t && ci < res) {
				res = ci;
			}
		}
		if (res != 9999) {
			System.out.println(res);
		} else {
			System.out.println("TLE");
		}
	}
}
/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