Submission #680766

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
680766	2023-01-11T18:10:59 Z	four_specks	Nautilus (BOI19_nautilus)	C++17	100 / 100	205 ms	1276 KB

nautilus

#include <bits/stdc++.h>

using namespace std;

namespace
{
} // namespace

using BS = bitset<250'000>;

void solve()
{
    int r, c, m;
    cin >> r >> c >> m;

    vector<string> grid(r);
    for (string &row : grid)
        cin >> row;

    string s;
    cin >> s;

    BS base;
    for (int i = 0; i < r; i++)
    {
        for (int j = 0; j < c; j++)
        {
            if (grid[i][j] == '.')
                base[i * c + j] = 1;
        }
    }

    BS lft = base, rgt = base;
    for (int i = 0; i < r; i++)
        lft[i * c] = 0;
    for (int i = 0; i < r; i++)
        rgt[i * c + c - 1] = 0;

    BS can = base;
    for (char x : s)
    {
        if (x == 'N')
            can = (can >> c) & base;
        else if (x == 'W')
            can = ((can & lft) >> 1) & base;
        else if (x == 'E')
            can = ((can & rgt) << 1) & base;
        else if (x == 'S')
            can = (can << c) & base;
        else
            can = ((can >> c) | ((can & rgt) << 1) | ((can & lft) >> 1) | (can << c)) & base;
    }

    cout << can.count() << '\n';
}

int main()
{
    ios_base::sync_with_stdio(false), cin.tie(NULL);

    solve();

    return 0;
}

Subtask #1

29.0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	724 KB	Output is correct
2	Correct	2 ms	756 KB	Output is correct
3	Correct	2 ms	724 KB	Output is correct
4	Correct	2 ms	724 KB	Output is correct
5	Correct	2 ms	724 KB	Output is correct
6	Correct	2 ms	724 KB	Output is correct

Subtask #2

37.0 / 37.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	724 KB	Output is correct
2	Correct	2 ms	756 KB	Output is correct
3	Correct	2 ms	724 KB	Output is correct
4	Correct	2 ms	724 KB	Output is correct
5	Correct	2 ms	724 KB	Output is correct
6	Correct	2 ms	724 KB	Output is correct
7	Correct	3 ms	752 KB	Output is correct
8	Correct	4 ms	724 KB	Output is correct
9	Correct	3 ms	748 KB	Output is correct
10	Correct	3 ms	748 KB	Output is correct
11	Correct	3 ms	752 KB	Output is correct
12	Correct	4 ms	784 KB	Output is correct
13	Correct	4 ms	880 KB	Output is correct
14	Correct	4 ms	724 KB	Output is correct
15	Correct	4 ms	748 KB	Output is correct
16	Correct	4 ms	724 KB	Output is correct
17	Correct	4 ms	724 KB	Output is correct
18	Correct	4 ms	724 KB	Output is correct
19	Correct	5 ms	724 KB	Output is correct
20	Correct	4 ms	724 KB	Output is correct
21	Correct	4 ms	724 KB	Output is correct

Subtask #3

34.0 / 34.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	724 KB	Output is correct
2	Correct	2 ms	756 KB	Output is correct
3	Correct	2 ms	724 KB	Output is correct
4	Correct	2 ms	724 KB	Output is correct
5	Correct	2 ms	724 KB	Output is correct
6	Correct	2 ms	724 KB	Output is correct
7	Correct	3 ms	752 KB	Output is correct
8	Correct	4 ms	724 KB	Output is correct
9	Correct	3 ms	748 KB	Output is correct
10	Correct	3 ms	748 KB	Output is correct
11	Correct	3 ms	752 KB	Output is correct
12	Correct	4 ms	784 KB	Output is correct
13	Correct	4 ms	880 KB	Output is correct
14	Correct	4 ms	724 KB	Output is correct
15	Correct	4 ms	748 KB	Output is correct
16	Correct	4 ms	724 KB	Output is correct
17	Correct	4 ms	724 KB	Output is correct
18	Correct	4 ms	724 KB	Output is correct
19	Correct	5 ms	724 KB	Output is correct
20	Correct	4 ms	724 KB	Output is correct
21	Correct	4 ms	724 KB	Output is correct
22	Correct	110 ms	1260 KB	Output is correct
23	Correct	92 ms	1260 KB	Output is correct
24	Correct	91 ms	1276 KB	Output is correct
25	Correct	93 ms	1256 KB	Output is correct
26	Correct	104 ms	1272 KB	Output is correct
27	Correct	146 ms	1236 KB	Output is correct
28	Correct	167 ms	1264 KB	Output is correct
29	Correct	159 ms	1260 KB	Output is correct
30	Correct	159 ms	1276 KB	Output is correct
31	Correct	169 ms	1236 KB	Output is correct
32	Correct	188 ms	1236 KB	Output is correct
33	Correct	205 ms	1276 KB	Output is correct
34	Correct	186 ms	1260 KB	Output is correct
35	Correct	190 ms	1276 KB	Output is correct
36	Correct	187 ms	1260 KB	Output is correct