#include <bits/stdc++.h>
#include "artclass.h"
using namespace std;
#define rep(i , j , k) for (int i = j; i < k; i++)
double sq(double x) { return x * x; }
inline double D(vector<int> a, vector<int> b) {
return sqrt((sq(a[0] - b[0]) + sq(a[1] - b[1]) + sq(a[2] - b[2])) / 3.0);
}
int dx[7] = {0 , 0 , 1 , 1 , 1 , 2 , 2};
int dy[7] = {1 , 2 , 0 , 1 , 2 , 0 , 1};
int style(int H , int W , int R[500][500], int G[500][500], int B[500][500]) {
double dist = 0;
rep(i , 0 , H)
rep(j , 0 , W)
dist += D({R[i][j] , G[i][j] , B[i][j]} , {0 , 255 , 0});
dist /= H * W;
// cout << dist << endl;
double invar = 0;
int cnt = 0;
rep(i , 0 , H)
rep(j , 0 , W)
rep(z , 0 , 7) {
int x = i + dx[z];
int y = j + dy[z];
if (x < H && y < W) {
cnt++;
invar += sqrt(D({R[i][j] , G[i][j] , B[i][j]} , {R[x][y] , G[x][y] , B[x][y]}));
}
}
invar /= cnt;
// cout << invar << endl;
if (invar < 1.8)
return 4;
if (dist > 150)
return 1;
if (invar < 4.5) return 2;
return 3;
}
