r, c = map(int, raw_input().split())
raw_input()
p = [map(int, raw_input().split()) + [0] for i in xrange(r)] + [[0]*(c+1)]
raw_input()
s = [map(int, raw_input().split()) + [4] for i in xrange(r)] + [[4]*(c+1)]

def f(a, b, c):
    r = 1.0
    r *= dpp[j] if a else 1.0-dpp[j]
    r *= dpi[j-1] if b else 1.0-dpi[j-1]
    r *= dpi[j+1] if c else 1.0-dpi[j+1]
    return r

dp = [[0.5]*c + [0] for i in xrange(r)] + [[0]*(c+1)]
ans = 0.0
for i in xrange(r):
    si = s[i]
    pi = p[i]
    dpp = dp[i-1]
    dpi = dp[i]
    update = 1
    resd = -1
    while update:
        update = 0
        res = 0.0
        for j in xrange(c):
            if si[j]==0:
                nxt = pi[j]/100.0
            elif si[j]==1:
                nxt = pi[j]*(1.0 - f(0,0,0))/100.0
            elif si[j]==2:
                nxt = pi[j]*(f(1,1,1)+f(1,1,0)+f(1,0,1)+f(0,1,1))/100.0
            elif si[j]==3:
                nxt = pi[j]*f(1,1,1)/100.0
            else:
                nxt = 0.0
            if not nxt-1e-12 < dpi[j] < nxt+1e-12:
                update = 1
            dpi[j] = nxt
        for j in xrange(c):
            res += dpi[j]
        if not resd-1e-12 < res < resd+1e-12:
            update = 1
        resd = res
    ans += resd
print ans