import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main
{

  public static void main(String[] args) throws IOException
  {
    BufferedReader r = new BufferedReader(new InputStreamReader(System.in), 1);

    String s = r.readLine();
    String sl[] = s.split(" ");

    int n = Integer.parseInt(sl[0]);
    int t = Integer.parseInt(sl[1]);
    
    int m = 9999;
    
    for(int i = 0; i < n; i++)
    {
      s = r.readLine();
      sl = s.split(" ");

      int c = Integer.parseInt(sl[0]);
      int v = Integer.parseInt(sl[1]);
      
      if(v <= t && c < m)
      {
        m = c;
      }
      
    }
    System.out.println(m < 9999 ? m : "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