Submission #1187576

#	Time	Username	Problem	Language	Result	Execution time	Memory
1187576		omerking	Nautilus (BOI19_nautilus)	C++20	66 / 100	1095 ms	840 KiB

nautilus

#include<iostream>
#include<bitset>
#include<string>
using namespace std;
int dx[]={-1,0,1,0},dy[]={0,1,0,-1};
int main(){
    int r,c,m;cin>>r>>c>>m;
    string a[r],s;for(int i=0;i<r;++i)cin>>a[i];cin>>s;
    bitset<500>dp[500],tmp[500];
    for(int i=0;i<r;++i)for(int j=0;j<c;++j)dp[i][j]=a[i][j]=='.';
    for(char ch:s){
        for(int i=0;i<r;++i)tmp[i].reset();
        for(int i=0;i<r;++i)for(int j=0;j<c;++j)if(dp[i][j]){
            for(int d=0;d<4;++d)if(ch=='?'||"NESW"[d]==ch){
                int ni=i+dx[d],nj=j+dy[d];
                if(ni>=0&&ni<r&&nj>=0&&nj<c&&a[ni][nj]=='.')tmp[ni][nj]=1;
            }
        }
        swap(dp,tmp);
    }
    int ans=0;
    for(int i=0;i<r;++i)ans+=dp[i].count();
    cout<<ans;
    return 0;
}

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