//https://ncode.syosetu.com/n4830bu/309/
#include <bits/stdc++.h>
using namespace std;

int main() {
    int R, C;
    cin >> R >> C;
    vector P(R, vector(C, 0.0));
    vector S(R, vector(C, 0));
    for (auto&& V : P) {
        for (auto&& p : V) {
            cin >> p;
            p /= 100;
        }
    }
    for (auto&& V : S) {
        for (auto&& s : V) {
            cin >> s;
        }
    }
    vector maine(1 << C, 0.0);
    maine[0] = 1;
    double ans = 0;
    for (int r = 0; r < R; r++) {
        auto& p = P[r];
        vector book(1 << C, 0.0);
        for (int bit = 0; bit < (1 << C); bit++) {
            double prob = 1.0;
            for (int c = 0; c < C; c++) {
                if (bit & (1 << c))
                    prob *= p[c];
                else
                    prob *= (1 - p[c]);
            }
            for (int honzuki = 0; honzuki < (1 << C); honzuki++) {
                auto s = S[r];
                int narou = 0;
                int que = 0;
                for (int i = 0; i < C; i++) {
                    if (s[i])
                        if (honzuki & (1 << i))
                            s[i]--;
                    if (s[i] == 0 && (bit & (1 << i))) {
                        que |= (1 << i);
                        narou |= (1 << i);
                    }
                }
                while (que) {
                    int x = __builtin_ctz(que);
                    que ^= (1 << x);
                    for (int i = 0; i < 2; i++) {
                        int y = x + 1 - i * 2;
                        if (y >= 0 && y < C) {
                            if (((1 << y) & narou) || !(bit & (1 << y)))
                                continue;
                            s[y]--;
                            if (s[y] == 0) {
                                narou |= (1 << y);
                                que |= (1 << y);
                            }
                        }
                    }
                }

                book[narou] += prob * maine[honzuki];
            }
        }
        for (int bit = 0; bit < (1 << C); bit++) {
            ans += __builtin_popcount(bit) * book[bit];
        }
        swap(book, maine);
    }
    cout << fixed << setprecision(10) << ans << endl;
}