#include <bits/stdc++.h>
using namespace std;
struct node{
	int mon;
	int time;
}a[1000005];
int cmp(node x,node y){
	return x.mon>y.mon;
} 
int main(){
	int n,m,z=1;
	cin>>n>>m;
	long long in=9999999999;
	for(int i=1;i<=n;i++){
		cin>>a[i].mon>>a[i].time;
		if(a[i].time<=m&&a[i].mon<in){
			in=a[i].mon;
		}
	}
	if(in==9999999999){
		cout<<"TLE";
	}
	else{
		cout<<in;
	}
	return 0;
}