#include <bits/stdc++.h>
using namespace std;
 
int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
 
	int n, res = 0;
	cin >> n;
 
	vector <vector <int>> g(n + 1, vector<int>(n));
 
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			cin >> g[i][j];
		}
	}
 
	for (int i = 0; i < n; i++) {
		cin >> g[n][i];
	}
 
	for (int i = 0; i < n ; i++) {
		for (int j = i; j < n; j++) {
			if (
				g[i][j] == 1 &&
				g[n][i] != g[n][j]
			) {
				res++;
			}
		}
	}
 
	cout << res;	
	return 0;
}

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

NwowIDEgMCAwIDAgMSAxCjEgMCAxIDAgMCAwIDAKMCAxIDAgMCAxIDEgMAowIDAgMCAwIDAgMCAwCjAgMCAxIDAgMCAxIDAKMSAwIDEgMCAxIDAgMAoxIDAgMCAwIDAgMCAwCgoxIDEgMSAxIDEgMyAzCg==

7
0 1 0 0 0 1 1
1 0 1 0 0 0 0
0 1 0 0 1 1 0
0 0 0 0 0 0 0
0 0 1 0 0 1 0
1 0 1 0 1 0 0
1 0 0 0 0 0 0

1 1 1 1 1 3 3