/* d502 */
/* AC (0ms, 84KB) */
#include <cstdio>
using namespace std;
int item1, item2, item3, item4, sum;
int main()
{
while(~scanf("%d %d %d %d", &item1, &item2, &item3, &item4))
{
sum = 0;
sum += item4;
sum += item3;
if(item1 <= item3 * 27)
item1 = 0;
else
item1 = item1 % (item3 * 27);
if(item1)
{
sum += (item2 >> 3);
item2 %= 8;
int last = 64 - ((item2) << 3);
if(last >= item1)
sum += item1;
else
{
item1 -= last;
sum += (item1 >> 6) + ((item1 & 63) != 0);
}
}
else
sum += (item2 >> 3) + ((item2 & 7) != 0);
printf("%d\\n", sum);
}
return 0;
}