// game.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <string>
using namespace std;
const int maxn = 26;
string h[maxn];
string v[maxn];
int main()
{
int n;
cin >> n;
int m;
cin >> m;
for (int i = 0; i < n + 1; i++)
{
cin >> h[i];
}
for (int i = 0; i < n; i++)
{
cin >> v[i];
}
int vys = 0;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < m; j++)
{
if (h[i][j] == '1' && h[i + 1][j] == '1' && v[i][j] == '1' && v[i][j + 1] == '1')
{
vys += 1;
}
}
}
int total = n * m;
cout << (total - vys)*-1 << endl;
return 0;
//std::cout << "Hello World!\n";
}
// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu
// Tips for Getting Started:
// 1. Use the Solution Explorer window to add/manage files
// 2. Use the Team Explorer window to connect to source control
// 3. Use the Output window to see build output and other messages
// 4. Use the Error List window to view errors
// 5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
// 6. In the future, to open this project again, go to File > Open > Project and select the .sln file
