#include <iostream>

using namespace std;
int a[101][101], n, m, l, c;

int sum(int l1, int c1, int l2, int c2)
{

    if((l1 > l2) || (c1 > c2)) return 0;
    else
        if((l1 == l2) && (c1 == c2))
          if(a[l1][c1] % 2 == 0)return a[l1][c1];
        else return 0;
    else
    {
        int s = 0;
        int lm = (l1 + l2) / 2;
        int cm = (c1 + c2) / 2;
        s += sum(l1, c1, lm, cm);
        s += sum(l1, cm + 1, lm, c2);
        s += sum(lm + 1, c1, l2, cm);
        s += sum(lm + 1, cm + 1, l2, c2);
        return s;
    }
}

int main()
{
    int i, j;
    cin >> n>> m;
    for(i = 1;i <= n; i++)
        for(j = 1; j<= m;j++)
            cin >> a[i][j];
    cout << sum(1, 1, n, m);
    return 0;
}