#include "artclass.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ld long double
const int maxn = 5e2 + 20;
const int dx[] = {0 , 0 , -1 , 1};
const int dy[] = {1 ,-1 , 0 , 0};
int style(int n , int m , int R[500][500] , int G[500][500] , int B[500][500])
{
vector<int> tmp1 , tmp2 , tmp3;
ld mG = 0;
for(int x = 0; x < n; x++)
for(int y = 0; y < m; y++)
{
mG += (255 - G[x][y]) * (255 - G[x][y]) + 10 * (R[x][y] + B[x][y]) * (R[x][y] + B[x][y]);
for(int i = 0; i < 4; i++)
{
int nx = x + dx[i] , ny = y + dy[i];
if(0 <= nx && nx < n && 0 <= ny && ny < m)
{
tmp1.pb(abs(R[x][y] - R[nx][ny]));
tmp2.pb(abs(G[x][y] - G[nx][ny]));
tmp3.pb(abs(B[x][y] - B[nx][ny]));
}
}
}
mG /= n * m;
sort(tmp1.begin() , tmp1.end());
sort(tmp2.begin() , tmp2.end());
sort(tmp3.begin() , tmp3.end());
tmp1.erase(tmp1.begin() , tmp1.begin() + 5000);
tmp2.erase(tmp2.begin() , tmp2.begin() + 5000);
tmp3.erase(tmp3.begin() , tmp3.begin() + 5000);
int sum1 = 0 , sum2 = 0 , sum3 = 0 , sz = tmp1.size();
for(int i = 0; i < (int)tmp1.size(); i++)
{
sum1 += tmp1[i];
sum2 += tmp2[i];
sum3 += tmp3[i];
}
sum1 += sum2 + sum3;
sz *= 3;
if(mG <= 5e5)
return 2;
if(sum1 / (ld)sz <= 13)
return 4;
return 3;
}
