#include "artclass.h"
#include <cstdlib>
#include <cmath>
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
double delta = 0;
for (int i=0; i<H; i++) {
for (int j=0; j<W-1; j++) {
delta += sqrt(abs(R[i][j+1] - R[i][j]) + abs(G[i][j+1] - G[i][j]) + abs(B[i][j+1] - B[i][j]));
}
}
for (int j=0; j<W; j++) {
for (int i=0; i<H-1; i++) {
delta += sqrt(abs(R[i][j] - R[i+1][j]) + abs(G[i][j] - G[i+1][j]) + abs(B[i][j] - B[i+1][j]));
}
}
double t = 100.0 * delta / (2 * W * H - H - W);
if(t < 250) return 4;
else if(t < 450) return 1;
else if(t < 675) return 2;
return 3;
}
