#include <iostream>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <cstdio>

using namespace std;

int f[101][1001],n,x,y;

struct node
{
	int w,v,t,h;
}P[301];

int main()
{
	freopen("shop.in","r",stdin);
	freopen("shop.out","w",stdout);
	scanf("%d%d%d",&n,&x,&y);
	for (int i=1;i<=n;i++)
	{
		scanf("%d%d%d%d",&P[i].w,&P[i].v,&P[i].t,&P[i].h);
	}
	for (int i=1;i<=n;i++)
	for (int j=y;j>=0;j--)
	for (int k=x;k>=0;k--)
	{
		if (j-P[i].v>=0 && k-P[i].w>=0 && f[j][k]<f[j-P[i].v][k-P[i].w]+P[i].t) f[j][k]=f[j-P[i].v][k-P[i].w]+P[i].t;
		if (j-P[i].h*P[i].v>=0 && k-P[i].h*P[i].w>=0 && f[j][k]<f[j-P[i].h*P[i].v][k-P[i].h*P[i].w]+P[i].h*P[i].t) 
			f[j][k]=f[j-P[i].h*P[i].v][k-P[i].h*P[i].w]+P[i].h*P[i].t;
	}
	printf("%d\n",f[y][x]);
}