#include "artclass.h"
#include<cstdio>
int abs(int a){
if(a>0) return a;
else return -a;
}
int style(int H,int W,int R[500][500],int G[500][500],int B[500][500]){
int sum=0;
for(int i=0;i<H-1;i++){
for(int j=0;j<W-1;j++){
sum+=abs(R[i+1][j]-R[i][j]);
sum+=abs(R[i][j+1]-R[i][j]);
sum+=abs(G[i+1][j]-G[i][j]);
sum+=abs(G[i][j+1]-G[i][j]);
sum+=abs(B[i+1][j]-B[i][j]);
sum+=abs(B[i][j+1]-B[i][j]);
}
}
int ans=(double)sum/(H-1)/(W-1);
if(ans<=17)return 4;//7-17
if(ans<=48) return 1;//18-58
if(ans<=110) return 2;//50-111
return 3;//108-228
}
