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Submission #593713

# Submission time Handle Problem Language Result Execution time Memory
593713 2022-07-11T13:57:23 Z nguyentu Nautilus (BOI19_nautilus) C++14
66 / 100
 1000 ms 213056 KB 
#include <bits/stdc++.h>

#pragma GCC target("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

using namespace std;

#define ii pair<int , int>  
#define iv pair<ii , ii>
#define iii pair<int , ii>
#define fi first
#define se second
#define int long long
const int inf = 1e18 + 7;
const int MAX_N = 5e2 + 7;
const int MOD = 1e9 + 7;

char a[MAX_N][MAX_N];
int f[MAX_N][MAX_N][107];
char s[5007];

signed main() {
    ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
    int n , m , l; cin >> n >> m >> l;
    //subtask 1&2
    //if (n <= 100 && m <= 100 && l <= 100) {
        for (int i = 1 ; i <= n ; i++) {
            for (int j = 1 ; j <= m ; j++) {
                cin >> a[i][j];
            }
        }   
        
        for (int i = 1 ; i <= l ; i++) {
            cin >> s[i];
        }
        for (int i = 1 ; i <= n ; i++) {
            for (int j = 1 ; j <= m ; j++) {
                if (a[i][j] != '#') {
                    f[i][j][0] = 1;
                } 
            }
        }
        for (int h = 1 ; h <= l ; h++) {
            for (int i = 1 ; i <= n ;i ++) {
                for (int j = 1 ; j <= m ; j++) {
                    if (a[i][j] == '#') continue;;
                    if (s[h] == 'W' && j < m) {
                        f[i][j][h] = f[i][j + 1][h - 1];
                    }
                    if (s[h] == 'N' && i < n) {
                        f[i][j][h] = f[i + 1][j][h - 1]; 
                    }
                    if (s[h] == 'E' && 1 < j) {
                        f[i][j][h] = f[i][j - 1][h - 1];
                    }
                    if (s[h] == 'S' && 1 < i) {
                        f[i][j][h] = f[i - 1][j][h - 1];
                    }
                    if (s[h] == '?') {
                        if (j < m && f[i][j + 1][h - 1]) f[i][j][h] = f[i][j + 1][h - 1];
                        if (i < n && f[i + 1][j][h - 1]) f[i][j][h] = f[i + 1][j][h - 1];
                        if (1 < j && f[i][j - 1][h - 1]) f[i][j][h] = f[i][j - 1][h - 1];
                        if (1 < i && f[i - 1][j][h - 1]) f[i][j][h] = f[i - 1][j][h - 1];
                    }
                }
            }
        }
        int ans = 0;

        for (int i = 1 ; i <= n ;i ++) {
            for (int j = 1 ; j <= m ; j++) {
            if (f[i][j][l]) {
                    ans++;
                }
                //cout << f[i][j][l] << " ";
            }
            //cout << '\n';
        }
        cout << ans;
    //}
    //else {
    //subtask 3
        //bitset<5007> f[2][MAX_N];
        //bitset<5007> d[MAX_N];
        // for (int i = 0 ; i < n ; i++) {
        //     d[i].flip();
        //     f[1][i].flip();
        //     for (int j = 0 ; j < m ; j++) {
        //         cin >> a[i][j];
        //         if (a[i][j] == '#') {
        //             d[i][j].flip();
        //             f[1][i][j].flip();
        //         }
        //     }
        // }
        // for (int i = 0 ; i < l ; i++) {
        //     cin >> s[i];
        // }
        // for (int i = 0 ; i < l ; i++) {
        //     int now = i & 1;
        //     int prev = now ^ 1;
        //     for (int j = 0 ; j < n ; j++) {
        //         if (s[i] == 'W') {
        //             f[now][j] = f[prev][j] << 1;
        //         }
        //         if (s[i] == 'E') {
        //             f[now][j] = f[prev][j] >> 1;
        //         }
        //         if (s[i] == 'S') {
        //             f[now][j] = f[prev][j - 1];
        //         }
        //         if (s[i] == 'N') {
        //             f[now][j] = f[prev][j + 1];
        //         }
        //         if (s[i] == '?') {
        //             f[now][j] |= f[prev][j - 1];
        //             f[now][j] |= f[prev][j + 1];
        //             f[now][j] |= (f[prev][j] >> 1);
        //             f[now][j] |= (f[prev][j] << 1);
        //         }
        //         f[now][j] = f[now][j] & d[j];
        //     }
        //     for (int j = 0 ; j < n ; j++) {
        //         f[prev][j] = f[now][j];
        //     }
        // }
        // int ans = 0;
        // for (int i = 0 ; i < n ; i++) {
        //     for (int j = 0 ; j < m ; j++) {
        //         if (f[(l - 1) & 1][i][j]) {
        //             ans++;
        //         }
        //     }
        // }
        // cout << ans;
    //}
    return 0;
}

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9172 KB Output is correct
2 Correct 10 ms 9072 KB Output is correct
3 Correct 11 ms 9048 KB Output is correct
4 Correct 9 ms 8568 KB Output is correct
5 Correct 7 ms 6612 KB Output is correct
6 Correct 3 ms 596 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9172 KB Output is correct
2 Correct 10 ms 9072 KB Output is correct
3 Correct 11 ms 9048 KB Output is correct
4 Correct 9 ms 8568 KB Output is correct
5 Correct 7 ms 6612 KB Output is correct
6 Correct 3 ms 596 KB Output is correct
7 Correct 8 ms 9176 KB Output is correct
8 Correct 11 ms 9044 KB Output is correct
9 Correct 13 ms 8572 KB Output is correct
10 Correct 7 ms 6708 KB Output is correct
11 Correct 2 ms 468 KB Output is correct
12 Correct 9 ms 9212 KB Output is correct
13 Correct 13 ms 9108 KB Output is correct
14 Correct 16 ms 9044 KB Output is correct
15 Correct 8 ms 6660 KB Output is correct
16 Correct 3 ms 468 KB Output is correct
17 Correct 12 ms 9172 KB Output is correct
18 Correct 16 ms 9172 KB Output is correct
19 Correct 13 ms 8468 KB Output is correct
20 Correct 8 ms 6344 KB Output is correct
21 Correct 3 ms 468 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9172 KB Output is correct
2 Correct 10 ms 9072 KB Output is correct
3 Correct 11 ms 9048 KB Output is correct
4 Correct 9 ms 8568 KB Output is correct
5 Correct 7 ms 6612 KB Output is correct
6 Correct 3 ms 596 KB Output is correct
7 Correct 8 ms 9176 KB Output is correct
8 Correct 11 ms 9044 KB Output is correct
9 Correct 13 ms 8572 KB Output is correct
10 Correct 7 ms 6708 KB Output is correct
11 Correct 2 ms 468 KB Output is correct
12 Correct 9 ms 9212 KB Output is correct
13 Correct 13 ms 9108 KB Output is correct
14 Correct 16 ms 9044 KB Output is correct
15 Correct 8 ms 6660 KB Output is correct
16 Correct 3 ms 468 KB Output is correct
17 Correct 12 ms 9172 KB Output is correct
18 Correct 16 ms 9172 KB Output is correct
19 Correct 13 ms 8468 KB Output is correct
20 Correct 8 ms 6344 KB Output is correct
21 Correct 3 ms 468 KB Output is correct
22 Execution timed out 1090 ms 213056 KB Time limit exceeded
23 Halted 0 ms 0 KB -