Submission #106190

#	Time	Username	Problem	Language	Result	Execution time	Memory
106190		mohammedehab2002	Dango Maker (JOI18_dango_maker)	C++11	100 / 100	1202 ms	24548 KiB

dango_maker

#include <iostream>
#include <string.h>
using namespace std;
int dp[5005][3][3],n,m;
char arr[5005][5005];
int solve(int i,int x,int y,int a,int b)
{
	if (!x || y>m)
	return 0;
	if (dp[i][a][b]!=-1)
	return dp[i][a][b];
	int ans=solve(i+1,x-1,y+1,0,a);
	if (arr[x][y]=='R')
	{
		if (arr[x][y+1]=='G' && arr[x][y+2]=='W')
		ans=max(ans,solve(i+1,x-1,y+1,1,a)+1);
		if (arr[x+1][y]=='G' && arr[x+2][y]=='W' && a!=1 && b!=1)
		ans=max(ans,solve(i+1,x-1,y+1,2,a)+1);
	}
	return dp[i][a][b]=ans;
}
int main()
{
	int ans=0;
	scanf("%d%d",&n,&m);
	for (int i=1;i<=n;i++)
	{
		for (int j=1;j<=m;j++)
		scanf(" %c",&arr[i][j]);
	}
	for (int i=1;i<n+m;i++)
	{
		memset(dp,-1,sizeof(dp));
		ans+=solve(0,min(i,n),max(1,i-n+1),0,0);
	}
	printf("%d",ans);
}

Compilation message (stderr)

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:25:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~
dango_maker.cpp:29:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c",&arr[i][j]);
   ~~~~~^~~~~~~~~~~~~~~~~~

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