제출 #1291560

#제출 시각아이디문제언어결과실행 시간메모리
1291560hahaDango Maker (JOI18_dango_maker)C++20
100 / 100
164 ms9284 KiB
#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second
using namespace std;
const int maxn=3e3+5;
const int MOD=1e9+7;

int n,m;
char a[maxn][maxn];
int dp[maxn][2];

bool check1(int i,int j)
{
    if(j+2>m) return false;
    if(a[i][j]=='R'&&a[i][j+1]=='G'&&a[i][j+2]=='W') return true;
    return false;
}

bool check2(int i,int j)
{
    if(i+2>n) return false;
    if(a[i][j]=='R'&&a[i+1][j]=='G'&&a[i+2][j]=='W') return true;
    return false;
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++) cin>>a[i][j];
    }
    int ans=0;
    for(int k=1;k<=m+n;k++){
        int j=min(m,k);
        int res=0;
        //cout<<endl;
        for(int j=1;j<=m;j++) dp[j][0]=dp[j][1]=0;
        for(int i=max(1,k-m+1);i<=n&&j>=1;i++){
            dp[j][0]=max(dp[j+1][0],dp[j+3][1])+check1(i,j);
            dp[j][1]=max(dp[j+1][1],dp[j+1][0])+check2(i,j);
            res=max({res,dp[j][0],dp[j][1]});
            //cout<<i<<' '<<j<<endl;
            //cout<<dp[j][0]<<' '<<dp[j][1]<<endl;
            j--;
        }
        ans+=res;
    }
    cout<<ans;
}
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...