n = int(input())
a, b, c = list(map(int, input().split()))
S = list(input().split())

Slen = [0 for _ in range(n + 1)]
for i in range(n):
    Slen[i + 1] = Slen[i] + len(S[i])

Slen = set(Slen)
ans = 0
for i in Slen:
    if (i - c in Slen) and (i - c - b in Slen) and (i - c - b - a in Slen):
        ans += 1
print(ans)