import java.util.*;
public class Main {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int N,T;
        N=sc.nextInt();
        T=sc.nextInt();
        ArrayList<Integer> cost = new ArrayList<>();
        for(int a=0;a<N;a++){
            int c = sc.nextInt();
            int t=sc.nextInt();
            if(t<=T) cost.add(c);
        }
        if(cost.size()!=0) System.out.println(Collections.min(cost));
        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