import sys
import itertools

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

H, W = map(int, readline().split())
readline()
P = []
for _ in range(H):
    P += [0.0] + [0.01 * int(x) for x in readline().split()]
readline()
S = []
for _ in range(H):
    S += [4] + list(map(int, readline().split()))

W += 1

# (bit列, n) = (挙手の状態, リーチ目人数) に対して確率を持つ
dp = [0.0] * (W * (1 << W))
dp[0] = 1.0
mask = (1 << W) - 1
answer = 0
for p, s in zip(P, S):
    newdp = [0.0] * (W * (1 << W))
    for i in range(W * (1 << W)):
        if dp[i] == 0.0:
            continue
        bit, n = divmod(i, W)
        # 無知
        bit1 = (bit << 1) & mask
        newdp[bit1 * W] += dp[i] * (1 - p)
        # 知
        s1 = s - (bit & 1) - (bit >> W - 1)
        if s1 > 1:
            # 挙手しない確定
            newdp[bit1 * W] += dp[i] * p
        elif s1 == 1:
            # リーチ目に 1 人追加
            newdp[bit1 * W + n + 1] += dp[i] * p
        else:
            # 挙手する確定
            answer += (n + 1) * dp[i] * p
            bit1 |= (1 << n + 1) - 1
            newdp[bit1 * W] += dp[i] * p
    dp = newdp

print(answer)