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Submission #968691

# Submission time Handle Problem Language Result Execution time Memory
968691 2024-04-23T20:26:25 Z NintsiChkhaidze Nautilus (BOI19_nautilus) C++17
100 / 100
 204 ms 157800 KB 
#include <bits/stdc++.h>
#define ll long long
#define s second
#define f first
#define pb push_back
#define left (h*2),l,(l + r)/2
#define right (h*2+1),(l+r)/2 + 1,r
#define pii pair <int,int>
using namespace std;

const int N = 503;
char a[N][N];
vector <pii> neighbours = {{0,1}, {0,-1}, {1,0}, {-1,0}};
int n,m;
bitset <501> dp[N][5003];
bitset <501> mask[N];

bool valid(int x,int y){
	return (x >= 1 && x <= n && y >= 1 && y <= m && a[x][y] == '.');
}

signed main(){
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);

	int k;
	cin>>n>>m>>k;

	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= m; j++){
			cin >> a[i][j];
			if (a[i][j] == '.') dp[i][0][j] = 1,mask[i][j] = 1;
			else mask[i][j] = 0;
		}

	string s;
	cin>>s;

	map <char,pii> mp;
	mp['N'] = {-1,0};
	mp['S'] = {1,0};
	mp['E'] = {0,+1};
	mp['W'] = {0,-1};

	s='%' + s;
	for (int i = 1; i <= k; i++){

		for (int x = 1; x <= n; x++){
			bitset <501> nw;
			if (s[i] == 'E' || s[i] == '?'){
				nw |= (dp[x][i - 1] << 1) & mask[x];
			}

			if (s[i] == 'W' || s[i] == '?'){
				nw |= (dp[x][i - 1] >> 1) & mask[x];
			}

			if (s[i] == 'N' || s[i] == '?'){
				nw |= dp[x + 1][i - 1] & mask[x];
			}

			if (s[i] == 'S' || s[i] == '?'){
				nw |= dp[x - 1][i - 1] & mask[x];
			}

			dp[x][i] = nw;
		}

	}

	int ans=0;
	for (int i = 1; i <= n; i++)
		ans += dp[i][k].count();
	cout<<ans;
}

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 33116 KB Output is correct
2 Correct 5 ms 33116 KB Output is correct
3 Correct 5 ms 33116 KB Output is correct
4 Correct 7 ms 33112 KB Output is correct
5 Correct 5 ms 33332 KB Output is correct
6 Correct 4 ms 33116 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 33116 KB Output is correct
2 Correct 5 ms 33116 KB Output is correct
3 Correct 5 ms 33116 KB Output is correct
4 Correct 7 ms 33112 KB Output is correct
5 Correct 5 ms 33332 KB Output is correct
6 Correct 4 ms 33116 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 4 ms 33116 KB Output is correct
9 Correct 5 ms 33344 KB Output is correct
10 Correct 5 ms 33364 KB Output is correct
11 Correct 2 ms 5468 KB Output is correct
12 Correct 8 ms 33116 KB Output is correct
13 Correct 4 ms 33116 KB Output is correct
14 Correct 5 ms 33116 KB Output is correct
15 Correct 4 ms 33116 KB Output is correct
16 Correct 2 ms 5468 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 4 ms 33256 KB Output is correct
19 Correct 5 ms 33116 KB Output is correct
20 Correct 6 ms 33252 KB Output is correct
21 Correct 2 ms 5468 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 33116 KB Output is correct
2 Correct 5 ms 33116 KB Output is correct
3 Correct 5 ms 33116 KB Output is correct
4 Correct 7 ms 33112 KB Output is correct
5 Correct 5 ms 33332 KB Output is correct
6 Correct 4 ms 33116 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 4 ms 33116 KB Output is correct
9 Correct 5 ms 33344 KB Output is correct
10 Correct 5 ms 33364 KB Output is correct
11 Correct 2 ms 5468 KB Output is correct
12 Correct 8 ms 33116 KB Output is correct
13 Correct 4 ms 33116 KB Output is correct
14 Correct 5 ms 33116 KB Output is correct
15 Correct 4 ms 33116 KB Output is correct
16 Correct 2 ms 5468 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 4 ms 33256 KB Output is correct
19 Correct 5 ms 33116 KB Output is correct
20 Correct 6 ms 33252 KB Output is correct
21 Correct 2 ms 5468 KB Output is correct
22 Correct 154 ms 157552 KB Output is correct
23 Correct 137 ms 157776 KB Output is correct
24 Correct 141 ms 157604 KB Output is correct
25 Correct 134 ms 157800 KB Output is correct
26 Correct 135 ms 157520 KB Output is correct
27 Correct 187 ms 157772 KB Output is correct
28 Correct 164 ms 157780 KB Output is correct
29 Correct 164 ms 157780 KB Output is correct
30 Correct 168 ms 157760 KB Output is correct
31 Correct 171 ms 157524 KB Output is correct
32 Correct 180 ms 157564 KB Output is correct
33 Correct 191 ms 157744 KB Output is correct
34 Correct 184 ms 157748 KB Output is correct
35 Correct 181 ms 157780 KB Output is correct
36 Correct 204 ms 157568 KB Output is correct