Submission #860245

#	Time	Username	Problem	Language	Result	Execution time	Memory
860245		StefanSebez	Dango Maker (JOI18_dango_maker)	C++14	100 / 100	353 ms	80676 KiB

dango_maker

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
    int n,m;cin>>n>>m;
    int a[n+10][m+10];
    memset(a,-1,sizeof(a));
    for(int i=1;i<=n;i++)
	{
		string s;cin>>s;
		for(int j=0;j<m;j++)
		{
			if(s[j]=='R') a[i][j+1]=0;
			if(s[j]=='G') a[i][j+1]=1;
			if(s[j]=='W') a[i][j+1]=2;
		}
	}
	int res=0;
	for(int d=1;d<=n+m;d++)
	{
		int i=1,j=d-1,ct=1,dp[n+m+10][5];
		memset(dp,0,sizeof(dp));
		while(i<=n && j>=1)
		{
			if(j>m)
			{
				i++;
				j--;
				continue;
			}
			dp[ct][0]=max(dp[ct-1][0],max(dp[ct-1][1],dp[ct-1][2]));
			if(a[i][j-1]==0 && a[i][j]==1 && a[i][j+1]==2) dp[ct][1]=max(dp[ct-1][0],dp[ct-1][1])+1;
			if(a[i-1][j]==0 && a[i][j]==1 && a[i+1][j]==2) dp[ct][2]=max(dp[ct-1][0],dp[ct-1][2])+1;
			i++;
			j--;
			ct++;
		}
		ct--;
		res+=max(dp[ct][0],max(dp[ct][1],dp[ct][2]));
	}
	cout<<res<<endl;
    return 0;
}

• Subtask 1: 13 / 13
• Subtask 2: 20 / 20
• Subtask 3: 67 / 67