#include "artclass.h"
#include <bits/stdc++.h>
using namespace std;
int hwall[1000];
int gr;
int wh;
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
int hw=0;
int l=0;
for(int i=0;i<H-1;++i)
for(int j=0;j<W-1;++j){
hw++;
l+=abs(R[i][j]-R[i+1][j+1])
+abs(G[i][j]-G[i+1][j+1])
+abs(B[i][j]-B[i+1][j+1]);
}
for(int i=0;i<H;++i)
for(int j=0;j<W-1;++j){
hw++;
l+=abs(R[i][j]-R[i][j+1])
+abs(G[i][j]-G[i][j+1])
+abs(B[i][j]-B[i][j+1]);
}
for(int i=0;i<H-1;++i)
for(int j=0;j<W;++j){
hw++;
l+=abs(R[i][j]-R[i+1][j])
+abs(G[i][j]-G[i+1][j])
+abs(B[i][j]-B[i+1][j]);
}
l/=hw;
if(l<10)return 4;
if(l<27)return 1;
if(l<55)return 2;
return 3;
}
