#include "vision.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
using ll = long long;
using vi = vector<int>;
using ar2 = array<int,2>;
const int mxN = (int)1e5+10;
int n, m;
void construct_network(int H, int W, int K) {
	n = H, m = W;
	vector<int> v; v.clear();
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m; j++){
			vector<int> w; w.clear();
			for(int k = i; k < n; k++){
				for(int l = 0; l < m; l++){
					if(abs(i-k)+abs(j-l)==K) 
						w.push_back(k*W+l);
				}
			}
			if(!sz(w))continue;
			int x = add_xor(w);
			vector<int> t; t.clear(); 
			t.push_back(x), t.push_back(i*W+j);
			v.push_back(add_and(t)); break;
		}
	}
	add_or(v);
}