#include<bits/stdc++.h>
using namespace std;
struct Node{
	int c;
	int t;
}a[1010];
int main(){
	int n,T;
	cin>>n>>T;
	for(int i=1;i<=n;i++){
		cin>>a[i].c>>a[i].t;
	}
	int minnc=1e9;
	for(int i=1;i<=n;i++){
		if(a[i].t<=T){
			if(a[i].c<=minnc){
				minnc=min(minnc,a[i].c);
			}
		}
	}
	if(minnc==1e9){
		cout<<"TLE";
		return 0;
	}
	cout<<minnc;
	return 0;
}