N = int(input())
A,B,C = map(int,input().split())
SS = input().split()
L = []
for s in SS:
    L.append(len(s))


ans=0
for i in range(N+1):
    f=0
    j=i
    while j<N and f<A:
        f += L[j]
        j += 1
    if f==A:
        s=0
        l=j
        for k in range(j,N+1):
            while l<N and s<B:
                s += L[l]
                l += 1
            if s==B:
                t=0
                n=l
                for m in range(l,N+1):
                    while n<N and t<C:
                        t+=L[n]
                        n+=1
                    if t==C:
                        ans+=1
                    if m==N or t==C:
                        break
            if k==N or s==B:
                break
    if i==N:
        break
print(ans)