#include<bits/stdc++.h>
#include "artclass.h"
using namespace std;
int style(int h, int w, int R[500][500], int G[500][500], int B[500][500]) {
vector<int> diff;
for (int i = 0; i < h-1; i++) {
for (int j = 0; j < w-1; j++) {
diff.push_back(
abs(R[i][j] - R[i][j+1]) +
abs(R[i][j] - R[i+1][j]) +
abs(G[i][j] - G[i][j+1]) +
abs(G[i][j] - G[i+1][j]) +
abs(B[i][j] - B[i][j+1]) +
abs(B[i][j] - B[i+1][j]));
}
}
sort(diff.begin(), diff.end());
int q1 = (h - 1) * (w - 1) / 4;
int q2 = (h - 1) * (w - 1) / 2;
if (diff[q1] <= 50 && diff[q2] <= 50) return 4;
else if (diff[q1] <= 50) return 1;
else if (diff[q1] <= 100) return 3;
else return 2;
}
