#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]) {
int adjr=0,adjg=0,adjb=0;
for(int i=0; i<h; ++i) {
for(int j=0; j<w; ++j) {
if(i) {
adjr+=abs(r[i][j]-r[i-1][j]);
adjg+=abs(g[i][j]-g[i-1][j]);
adjb+=abs(b[i][j]-b[i-1][j]);
}
if(j) {
adjr+=abs(r[i][j]-r[i][j-1]);
adjg+=abs(g[i][j]-g[i][j-1]);
adjb+=abs(b[i][j]-b[i][j-1]);
}
}
}
long double contrast = ((long double) adjr+adjg+adjb) / ((long double) h*w);
if(contrast<=30.0) return 4;
assert(0);
if(contrast>=130.0) return 3;
assert(0);
return 1;
}
