#include "bits/stdc++.h"
#include<unordered_map>
#pragma warning(disable:4996)
using namespace std;
using ld = long double;
template<class T>
using Table = vector<vector<T>>;

ld pers[11][11];
int shys[11][11];
vector<vector<ld>>hands;
int main() {
	int R, C; cin >> R >> C;
	hands.resize(R+1);
	for (int i = 0; i < hands.size(); ++i){
		hands[i].resize(1 << C);
	}
	for (int i = 0; i < R; ++i){
		for (int j = 0; j < C; ++j){
			cin >> pers[i][j];
			pers[i][j] /= 100;
		}
	}
	for (int i = 0; i < R; ++i){
		for (int j = 0; j < C; ++j){
			cin >> shys[i][j];
		}
	}
	for (int i = 0; i < (1 << C); ++i){
		hands[0][i] = 0;
	}
	hands[0][0] = 1;
	ld ans = 0;
	for (int r = 1; r <= R; ++r){
		for (int k = 0; k < (1 << C); ++k){
			const bitset<11>prehands(k);
			for (int l = 0; l < (1 << C); ++l){
				if (hands[r - 1][k] < 1e-11)continue;
				const bitset<11> knows(l);
				ld percentage = hands[r - 1][k];
				bitset<11>ups(0);
				vector<int>points(C);
				for (int i = 0; i < C; ++i){
					if (prehands[i]){
						points[i] ++;
					}
					if (knows[i]){
						points[i] += 4 - shys[r - 1][i];
						percentage *= pers[r - 1][i];
					}
					else{
						percentage *= 1-pers[r - 1][i];
					}
				}
				for (int i = 0; i < C; ++i){
					
					if (points[i] >= 4){
						ups[i] = true;
						if (i != C - 1)points[i + 1] ++;
					}
				}
				for (int i = C-1; i >=0; --i){
					if (points[i] >= 4){
						ups[i] = true;
						if (i != 0)points[i - 1]++;
					}
				}
				hands[r][ups.to_ulong()] += percentage;
				ans += percentage*ups.count();
			}
		}
	}
	cout <<fixed<<setprecision(22)<< ans << endl;
	return 0;
}