Submission #203361

#	Time	Username	Problem	Language	Result	Execution time	Memory
203361		mdn2002	Nautilus (BOI19_nautilus)	C++14	0 / 100	7 ms	4600 KiB

nautilus

#include<bits/stdc++.h>
using namespace std;
int n,m,k,xx[]={0,0,1,-1},yy[]={1,-1,0,0},a[105][105],dp[105][105][105];
char gr[105][105];
string s;
void dfs(int x,int y,int in)
{
    dp[x][y][in]=1;
    if(in==k)
    {
        a[x][y]=1;
        return;
    }
    if(dp[x][y][in])return;
    int tx=x,ty=y;
    if(s[in]=='E')ty++;
    else if(s[in]=='W')ty--;
    else if(s[in]=='N')tx--;
    else if(s[in]=='S')tx++;
    else
    {
        for(int i=0;i<4;i++)
        {
            tx=x+xx[i],ty=y+yy[i];
            if(0<=tx&&tx<n&&0<=ty&&ty<m&&gr[tx][ty]=='.')dfs(tx,ty,in+1);
        }
        return;
    }
    if(0<=tx&&tx<n&&0<=ty&&ty<m&&gr[tx][ty]=='.')dfs(tx,ty,in+1);
}
int main()
{
    cin>>n>>m>>k;
    for(int i=0;i<n;i++)cin>>gr[i];
    cin>>s;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<m;j++)
        {
            if(gr[i][j]=='.')dfs(i,j,0);
        }
    }
    int ans=0;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<m;j++)
        {
            if(a[i][j])ans++;
        }
    }
    cout<<ans;
}

• Subtask 1: 0 / 29
• Subtask 2: 0 / 37
• Subtask 3: 0 / 34