#include<bits/stdc++.h>
using namespace std;
int d[200010];
int main()
{
	int n,a,b,maxn=0,minn=1000000000;
	cin>>n>>a>>b;
	for(int i=1;i<=n;i++)
	{
		cin>>d[i];
		if(d[i]==a+b)
		d[i]%=a+b; 
		maxn=max(maxn,d[i]);
		minn=min(minn,d[i]);
	}
	if((maxn-minn+1)%(a+b)<=a)
	{
		cout<<"Yes";
	}
	else
	{
		cout<<"No";
	}
	return 0;
}```