import Foundation

#if swift(>=4.0)
extension String {
    func split(by separator: String) -> [String] {
        return self.components(separatedBy: separator)
    }
    func toArray() -> [String] {
        return self.map{String($0)}
    }
}
#else
extension String {
    func split(by separator: String) -> [String] {
        return self.componentsSeparatedByString(separator)
    }
    func count() -> Int {
        return self.characters.count
    }
    func toArray() -> [String] {
        return self.characters.map{String($0)}
    }
}
extension Array where Element: Comparable {
    func max() -> Element! {
        return self.maxElement()
    }
    func min() -> Element! {
        return self.minElement()
    }
    func sorted() -> Array {
        return self.sort()
    }
    func reversed() -> Array {
        return self.reverse()
    }
    mutating func sort() {
        self.sortInPlace()
    }
}
extension Array {
    init(repeating: Element, count: Int) {
        self.init(count: count, repeatedValue: repeating)
    }
}
func stride<T: Strideable>(from start: T, to end: T, by stride: T.Stride) -> StrideTo<T> {
    return start.stride(to: end, by: stride)
}
#endif
func readInt() -> Int? {
    return Int(readLine()!)
}
func readStringSplit(by separator: String) -> [String] {
    return readLine()!.split(by: separator)
}
func readIntSplit(by separator: String) -> [Int] {
    return readLine()!.split(by: separator).map{Int($0)!}
}

/*************** テストスペース ***************/



/*************** メインプログラム ***************/

let input = readIntSplit(by: " ")
let (N, T) = (input[0], input[1])
var ans = 10000
for _ in 0..<N {
    let input = readIntSplit(by: " ")
    let (c, t) = (input[0], input[1])
    if t <= T {
        ans = min(ans, c)
    }
}
print(ans>1000 ? "TLE" : ans)
