import scala.io.StdIn._
object Main extends App {
    val Array(n, t) = readLine().split("\\s").map(_.toInt)

    var min_cost = 9999
    for (_ <- 1 to n) {
      val Array(c,ti) = readLine().split("\\s").map(_.toInt)
      if (ti<=t){
        min_cost = List(min_cost,c).min
      }
    }
    if (min_cost==9999){
      println("TLE")
    } else{
      println(min_cost)
    }
}