#include "artclass.h"
#include <bits/stdc++.h>
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500])
{
long long ans = 0;
for (int x = 0; x < H; x++)
for (int y = 0; y < W - 1; y++)
{
int RR = abs(R[x][y] - R[x][y + 1]);
int GG = abs(G[x][y] - G[x][y + 1]);
int BB = abs(B[x][y] - B[x][y + 1]);
ans += (RR + GG + BB);
}
ans /= (H * (W - 1));
// std::cerr << "inf: " << ans << '\n';
if (ans <= 8)
return 4;
if (ans <= 25)
return 1;
if (ans <= 53)
return 2;
// if (ans <= 120)
return 3;
}