import java.util.Scanner;
class Main{
	public static void main(String[] args) {
		int n,T,i,c,t,min,temp;
        i = 0;
        temp = 1001;
		Scanner sc = new Scanner(System.in);

		n = sc.nextInt();
		T = sc.nextInt();

		while(i < n){
			c = sc.nextInt();
			t = sc.nextInt();
			if(t <= T && c < temp){
                temp = c;
			}
            i++;
		}
      if(temp != 1001){
      	min = temp;
        System.out.println(min);
      }else{
        System.out.println("TLE");
      }
      
      sc.close();
      return;
	  }
}
/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