#include "artclass.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int INF=1e9;
const ll LINF=1e18;
#define fi first
#define se second
#define pii pair<int,int>
#define mid ((l+r)/2)
#define sz(a) (int((a).size()))
#define all(a) a.begin(),a.end()
#define endl "\n"
#define pb push_back
void PRINT(int x) {cerr << x;}
void PRINT(ll x) {cerr << x;}
void PRINT(double x) {cerr << x;}
void PRINT(char x) {cerr << '\'' << x << '\'';}
void PRINT(string x) {cerr << '\"' << x << '\"';}
void PRINT(bool x) {cerr << (x ? "true" : "false");}
template<typename T,typename V>
void PRINT(pair<T,V>& x){
cerr<<"{";
PRINT(x.fi);
cerr<<",";
PRINT(x.se);
cerr<<"}";
}
template<typename T>
void PRINT(T &x){
int id=0;
cerr<<"{";
for(auto _i:x){
cerr<<(id++ ? "," : "");
PRINT(_i);
}
cerr<<"}";
}
void _PRINT(){
cerr<<"]\n";
}
template<typename Head,typename... Tail>
void _PRINT(Head h,Tail... t){
PRINT(h);
if(sizeof...(t)) cerr<<", ";
_PRINT(t...);
}
#define Debug(x...) cerr<<"["<<#x<<"]=["; _PRINT(x)
int Hg,Wg;
bool Valid(int i,int j){
return (0<=i && i<Hg) && (0<=j && j<Wg);
}
bool In(int x,int l,int r){
return (l<=x && x<=r);
}
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
Hg=H,Wg=W;
vector<int> di={-1,1};
vector<int> dj={0,0};
ll Rv=0,Gv=0,Bv=0;
for(int i=0;i<Hg;i++){
for(int j=0;j<Wg;j++){
for(int d=0;d<2;d++){
int i1=i+di[d];
int j1=j+dj[d];
if(Valid(i1,j1)){
Rv+=abs(R[i][j]-R[i1][j1]);
Gv+=abs(G[i][j]-G[i1][j1]);
Bv+=abs(B[i][j]-B[i1][j1]);
}
}
}
}
di={0,0};
dj={-1,1};
ll Rh=0,Gh=0,Bh=0;
for(int i=0;i<Hg;i++){
for(int j=0;j<Wg;j++){
for(int d=0;d<2;d++){
int i1=i+di[d];
int j1=j+dj[d];
if(Valid(i1,j1)){
Rh+=abs(R[i][j]-R[i1][j1]);
Gh+=abs(G[i][j]-G[i1][j1]);
Bh+=abs(B[i][j]-B[i1][j1]);
}
}
}
}
vector<ll> ret={Rv,Gv,Bv,Rh,Gh,Bh};
for(int i=0;i<sz(ret);i++) ret[i]/=(H*W);
bool b4=true;
for(int i=0;i<6;i++) b4&=In(ret[i],0,9);
if(b4) return 4;
bool b3=true;
for(int i=0;i<6;i++) b3&=In(ret[i],33,200);
if(b3) return 3;
bool b1=true;
for(int i=0;i<6;i++) b1&=In(ret[i],5,24);
if(b1) return 1;
return 2;
}
