#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,s,d;
	cin>>n>>s>>d;
	int cnt=0;
	for(int i=1;i<=n;i++)
	{
		int x,y;
		cin>>x>>y;
		if(x<s&&y>d)
		{
			cnt++;	
		} 
	}
	if(cnt) cout<<"Yes";
	else cout<<"No"; 
	return 0;
}