#include <iostream>

using namespace std;
int n,m,a[1001][1001],i,j,kil[1001],kil2[1001],s;
int main()
{cin.tie(0);
ios_base::sync_with_stdio(false);
    cin>>n>>m;

    for (int x=1;x<=n;x++) for (int y=1;y<=m;y++) {cin>>a[x][y];kil[x]+=a[x][y];kil2[y]+=a[x][y];}
    for (int i=1;i<=n;i++) for (int j=1;j<=m;j++) s+=((kil[i]+kil2[j]+a[i][j])&1);
                                                                   cout<<s<<endl;
    return 0;
}