oj.uz

Submission #646577

# Submission time Handle Problem Language Result Execution time Memory
646577 2022-09-30T07:49:41 Z alextodoran Nautilus (BOI19_nautilus) C++17
100 / 100
 126 ms 728 KB 
/**
 ____ ____ ____ ____ ____
||a |||t |||o |||d |||o ||
||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|

**/

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int N, M, K;
    cin >> N >> M >> K;
    bitset <500> sea[N];
    for (int i = 0; i < N; i++) {
        string row;
        cin >> row;
        for (int j = 0; j < M; j++) {
            sea[i][j] = (row[j] == '.');
        }
    }

    bitset <500> dp[2][N];
    for (int i = 0; i < N; i++) {
        dp[0][i] = sea[i];
    }
    string path;
    cin >> path;
    for (int k = 1; k <= K; k++) {
        if (path[k - 1] == '?') {
            for (int i = 0; i < N; i++) {
                dp[k & 1][i] = ((dp[(k - 1) & 1][i] >> 1) | (dp[(k - 1) & 1][i] << 1));
                if (i > 0) {
                    dp[k & 1][i] |= dp[(k - 1) & 1][i - 1];
                }
                if (i < N - 1) {
                    dp[k & 1][i] |= dp[(k - 1) & 1][i + 1];
                }
            }
        } else {
            int di = 0, dj = 0;
            if (path[k - 1] == 'N') {
                dp[k & 1][N - 1].reset();
                for (int i = 0; i < N - 1; i++) {
                    dp[k & 1][i] = dp[(k - 1) & 1][i + 1];
                }
            } else if (path[k - 1] == 'E') {
                for (int i = 0; i < N; i++) {
                    dp[k & 1][i] = (dp[(k - 1) & 1][i] << 1);
                }
            } else if (path[k - 1] == 'S') {
                dp[k & 1][0].reset();
                for (int i = 1; i < N; i++) {
                    dp[k & 1][i] = dp[(k - 1) & 1][i - 1];
                }
            } else {
                for (int i = 0; i < N; i++) {
                    dp[k & 1][i] = (dp[(k - 1) & 1][i] >> 1);
                }
            }
        }
        for (int i = 0; i < N; i++) {
            dp[k & 1][i] &= sea[i];
        }
    }

    int answer = 0;
    for (int i = 0; i < N; i++) {
        answer += dp[K & 1][i].count();
    }
    cout << answer << "\n";

    return 0;
}

Compilation message

nautilus.cpp: In function 'int main()':
nautilus.cpp:49:17: warning: unused variable 'di' [-Wunused-variable]
   49 |             int di = 0, dj = 0;
      |                 ^~
nautilus.cpp:49:25: warning: unused variable 'dj' [-Wunused-variable]
   49 |             int di = 0, dj = 0;
      |                         ^~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 324 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 340 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 324 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 62 ms 680 KB Output is correct
23 Correct 62 ms 596 KB Output is correct
24 Correct 60 ms 668 KB Output is correct
25 Correct 63 ms 668 KB Output is correct
26 Correct 59 ms 584 KB Output is correct
27 Correct 95 ms 728 KB Output is correct
28 Correct 95 ms 664 KB Output is correct
29 Correct 93 ms 672 KB Output is correct
30 Correct 95 ms 596 KB Output is correct
31 Correct 96 ms 596 KB Output is correct
32 Correct 122 ms 668 KB Output is correct
33 Correct 119 ms 668 KB Output is correct
34 Correct 121 ms 712 KB Output is correct
35 Correct 126 ms 680 KB Output is correct
36 Correct 121 ms 680 KB Output is correct