N = int(input())
a, b, c = map(int, input().split())
S = ""
T = list(input().split())
for i in range(N):
    S += "1"
    S += "0" * (len(T[i]) - 1)
S += "1"

ind = 0
ans = 0
for i in range(N):
    if ind + a + b + c >= len(S):
        continue
    if S[ind] == "1" and S[ind + a] == "1" and S[ind + a + b] == "1" and S[ind + a + b + c] == "1":
        ans += 1
    ind += len(T[i])
print(ans)