#include "vision.h"
#include<bits/stdc++.h>
using namespace std;
#define REP(i,n) for(int i = 0; i < n; i ++)
#define FOR(i,a,b) for(int i = a; i < b; i++)
#define vi vector<int>
#define pb push_back
vi d1[405],d2[405];
int diag1[405],diag2[405];
int pref1[405],pref2[405];
void construct_network(int H, int W, int K){
REP(i,H){
REP(j,W){
d1[i+j].pb(i*W+j);
d2[i-j+W-1].pb(i*W+j);
}
}
diag1[0] = add_or(d1[0]);
diag2[0] = add_or(d2[0]);
pref1[0] = diag1[0];
pref2[0] = diag2[0];
FOR(i,1,H+W-1){
diag1[i] = add_or(d1[i]);
diag2[i] = add_or(d2[i]);
pref1[i] = add_or({pref1[i-1],diag1[i]});
pref2[i] = add_or({pref2[i-1],diag2[i]});
}
vi ans1,ans2;
int res1,res2;
FOR(i,K,H+W-1){
ans1.pb(add_and({pref1[i-K],diag1[i]}));
ans1.pb(add_and({pref2[i-K],diag2[i]}));
if(i != K){
ans2.pb(add_and({pref1[i-K-1],diag1[i]}));
ans2.pb(add_and({pref2[i-K-1],diag2[i]}));
}
}
res1 = add_or(ans1);
if(K != H+W-2){
res2 = add_or(ans2);
add_xor({res1,res2});
}
}
