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 [] cArray = new int [n];
		int [] tArray = new int [n];
		int cmin = 1001;
		for(int i = 0; i < n; i++) {
			cArray[i] = sc.nextInt();
			tArray[i] = sc.nextInt();
			
			if(tArray[i] <= t) {
				if(cmin > cArray[i]) {
					cmin = cArray[i];
				}
			}
		}
		
		if(cmin == 1001) System.out.println("TLE");
		else System.out.println(cmin);
		
		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