#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, a, b, sum = 0;
  cin >> n >> m;
  for (int i = 0; i < n * m; i++) {
    cin >> a >> b;
    if (a == 1 || b == 1) sum++;
  }
  cout << sum;
  return 0;
}
