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 minc = 1001;

		for(int i=0; i<N; i++){
			int c = sc.nextInt();
			int t = sc.nextInt();
			if(t<=T){
				if(c<minc){
					minc=c;
                }
            }
        }
		if(minc==1001){
			System.out.println("TLE");
        }else{
			System.out.println(minc);
        }
	}
}

/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