// yukicoder: No.73 helloworld
// 2019.5.11 bal4u

#include <stdio.h>

char he[] = "helloworld";
int a[26], f[26];

int main()
{
	int i, ans;
	char *p;

	p = he; while (*p) a[*p++ - 'a']++;
	for (i = 0; i < 26; i++) scanf("%d", f+i);
	ans = 1;
	for (i = 0; i < 26; i++) if (a[i]) {
		if (f[i] < a[i]) { ans = 0; break; }
		if (a[i] == 1) ans *= f[i];
		else if (a[i] == 2) ans *= f[i]/2 * (f[i]-f[i]/2);
		else {
			int k = f[i]/3; ans *= k*(f[i]-k)*(f[i]-k-1)/2;
		}
	}
	printf("%d\n", ans);
	return 0;
}