#include "artclass.h"
#include <bits/stdc++.h>
using namespace std;
int h,w;
struct Point
{
int x,y;
Point(){};
Point(int xi, int yi)
{
x = xi;
y = yi;
}
bool is_valid()
{
return x>=0&&x<h&&y>=0&&y<w;
}
};
Point dir[4] = {{1,0},{-1,0},{0,1},{0,-1}};
int r[500][500],g[500][500],b[500][500];
int c[500][500],used[500][500];
vector<int>comp;
map<int,int>mymap;
vector<int>pr;
void dfs(Point beg)
{
used[beg.x][beg.y] = 1;
for(int i = 0; i < 4; i++)
{
Point nb;
nb.x = beg.x + dir[i].x;
nb.y = beg.y + dir[i].y;
if(nb.is_valid() && !used[nb.x][nb.y]) dfs(nb);
}
}
void ps(int x, int y)
{
for(int i=x;i<h;i++)
{
if(used[i][y]) break;
used[i][y] = 1;
for(int j=y+1;j<w;j++)
{
if(used[i][j]) break;
used[i][j] = 1;
}
}
pr.push_back(c[x][y]);
}
int col_br;
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500])
{
h = H;
w = W;
int avg;
int x,y,z;
for(int i = 0; i < H; i++)
{
for(int j = 0; j < W; j++)
{
avg += R[i][j]+G[i][j]+B[i][j];
x += R[i][j];
y += G[i][j];
z += B[i][j];
r[i][j] = R[i][j]/10;
g[i][j] = G[i][j]/10;
b[i][j] = B[i][j]/10;
c[i][j] = r[i][j]*10000 + g[i][j]*100 + b[i][j];
}
}
avg /= (H*W);
for(int i = 0; i < H; i++)
{
for(int j = 0; j < W; j++)
{
if(!used[i][j])
{
dfs({i,j});
comp.push_back(c[i][j]);
mymap[c[i][j]]++;
if(mymap[c[i][j]]==1) col_br++;
}
}
}
memset(used,0,sizeof(used));
for(int i = 0; i<H;i++)
{
for(int j=0;j<W;j++)
{
ps(i,j);
}
}
int csz = comp.size();
int psz = pr.size();
if(col_br<=5&&abs(csz-psz)<=5) return 4;
if(col_br<=7&&abs(csz-psz)<=csz) return 1;
if(col_br<=120&&avg<=95) return 3;
return 2;
}
/*int main()
{
int h,w;
int R[500][500],G[500][500],B[500][500];
cout << style(h,w,R,G,B) << endl;
return 0;
}*/
