#include<cstdio>
#include<cstring>
#include<algorithm>
#include<iostream>
using namespace std;
int n,a,b,x,maxn,o,i;
int f[600000];

int main()
{
	freopen("dry.in","r",stdin);
	freopen("dry.out","w",stdout);
	scanf("%d%d%d",&n,&a,&b);
	memset(f,0,sizeof(f));
	maxn=0;
	for (i=1;i<=n;i++){
		scanf("%d",&x);
		if (x>maxn) maxn=x;
		f[x]++;
	}
	o=0;
	for (i=maxn;i>=1;i--){
		while (f[i]>0){
			if (i<=o){
				printf("%d",o/a);
				return 0;
			}
			f[i]--;
			if ((i-b)>o)
				f[i-b]++;
			o+=a;
			
		}
	}
	return 0;
}