from collections import defaultdict
N = int(input())
P = list(map(int, input().split()))
mod = 10 ** 9 + 7

# dp[i, j]: i枚コインを投げて、表の期待値がj -> 何通りか
dp = [defaultdict(int) for _ in range(N + 1)]
dp[0][0] = 1
for i, p in enumerate(P, 1):
    for j in range(i)[::-1]:
        for k, v in dp[j].items():
            dp[j + 1][k + p] += v
            dp[j + 1][k + p] %= mod

ans = 0
for i in range(1, N+1):
    for k, v in dp[i].items():
        if 2 * k > 100 * i:
            ans = (ans + v) % mod

print(ans)