N = int(input())
arr = list(map(int, input().split()))
L, R = map(int, input().split())

# Algo
arr_acc = [0] * N
cnt = 0
for j in range(0, N):
    num_add = arr[j]
    for i in range(0, j+1):
        acc = arr_acc[i] + num_add
        arr_acc[i] = acc
        if L <= acc <= R:
            cnt += 1
# Output
print(cnt)