#include<bits/stdc++.h>
using namespace std;
int main(){
	long long n,a,b,i,x,maxn=0,minn=1e+18;
	cin>>n>>a>>b;
	for(i=0;i<n;++i){
		cin>>x;
		x%=(a+b);
		if(x>maxn) maxn=x;
		if(x<minn) minn=x;
	}
	if(maxn-minn<a) cout<<"Yes"<<endl;
	else cout<<"No"<<endl;
	return 0;
}