#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define double long double
const int N=3e3+6;
char arr[N][N];
int ans=0;
int n,m;
int dp[N][N];
void fun(int y, int x, int w){
if(dp[y][x]>w+1)return;
dp[y][x]=w;
ans=max(ans,w);
for(int i=y;i<=n;i++){
if(i==y){
for(int j=x;j<=m;j++){
if(arr[i][j]=='R' and arr[i][j+1]=='G' and arr[i][j+2]=='W' ){
arr[i][j]='X';
arr[i][j+1]='X';
arr[i][j+2]='X';
fun(i,j,w+1);
arr[i][j]='R';
arr[i][j+1]='G';
arr[i][j+2]='W';
}
if(arr[i][j]=='R' and arr[i+1][j]=='G' and arr[i+2][j]=='W' d ){
arr[i][j]='X';
arr[i+1][j]='X';
arr[i+2][j]='X';
fun(i,j,w+1);
arr[i][j]='R';
arr[i+1][j]='G';
arr[i+2][j]='W';
}
}
}
else{
for(int j=1;j<=m;j++){
if(arr[i][j]=='R' and arr[i][j+1]=='G' and arr[i][j+2]=='W' ){
arr[i][j]='X';
arr[i][j+1]='X';
arr[i][j+2]='X';
fun(i,j,w+1);
arr[i][j]='R';
arr[i][j+1]='G';
arr[i][j+2]='W';
}
if(arr[i][j]=='R' and arr[i+1][j]=='G' and arr[i+2][j]=='W' ){
arr[i][j]='X';
arr[i+1][j]='X';
arr[i+2][j]='X';
fun(i,j,w+1);
arr[i][j]='R';
arr[i+1][j]='G';
arr[i+2][j]='W';
}
}
}
}
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin>>n>>m;
int cnt=0;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
dp[i][j]=0;
cin>>arr[i][j];
}
}
fun(1,1,0);
cout<<ans;
}
Compilation message
dango_maker.cpp: In function 'void fun(long long int, long long int, long long int)':
dango_maker.cpp:28:76: error: expected ')' before 'd'
28 | if(arr[i][j]=='R' and arr[i+1][j]=='G' and arr[i+2][j]=='W' d ){
| ~ ^~
| )
dango_maker.cpp: In function 'int main()':
dango_maker.cpp:70:9: warning: unused variable 'cnt' [-Wunused-variable]
70 | int cnt=0;
| ^~~
