func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = unsigned long long;   int main() {     ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);     int k;     cin >> k;     int n = (1 << k);     vector<vector<ll> > a(n, vector<ll>(n, 0));     for (int i = 0; i < n; i++)       for (int j = 0; j < n; j++) cin >> a[i][j];     int t;     cin >> t;     vector<pair<int, int> > shape(t);     for (int i = 0; i < t; i++) cin >> shape[i].first >> shape[i].second;     for (int r = 0; r < k; r++) {       vector<vector<ll> > b(n, vector<ll>(n, 0));       for (int c = 0; c < t; c++) {         for (int i = 0; i < (1 << k); i++) {           for (int j = 0; j < (1 << k); j++) {             b[(i + shape[c].first) & ((1 << k) - 1)]              [(j + shape[c].second) & ((1 << k) - 1)] ^= a[i][j];           }         }       }       a = b;       for (int c = 0; c < t; c++) {         shape[c].first = (shape[c].first * 2) % n;         shape[c].second = (shape[c].second * 2) % n;       }     }     int ans = 0;     for (int i = 0; i < n; i++)       for (int j = 0; j < n; j++)         if (a[i][j]) ans++;     cout << ans <<   n ;   }   