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Submission #813491

# Submission time Handle Problem Language Result Execution time Memory
813491 2023-08-07T18:52:32 Z bane Nautilus (BOI19_nautilus) C++17
66 / 100
 1000 ms 2516 KB 
#include<iostream>
#include<bits/stdc++.h>
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast,unroll-loops")
using namespace std;


const int nax = 501;
char grid[nax][nax];

vector<vector<int>>dp_new(nax, vector<int>(nax, 0));
vector<vector<int>>dp_old(nax, vector<int>(nax, 0));

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, m, k;
    cin >> n >> m >> k;
    for (int i = 0; i < n; i++){
        for (int j = 0; j < m; j++){
            cin >> grid[i][j];
        }
    }

    string s;
    cin >> s;
    for (int i = 0; i < n; i++){
        for (int j = 0; j < m; j++){
            dp_old[i][j] = (grid[i][j] == '.' ? 1 : 0);
        }
    }
    for (int t = 1; t <= k; t++){
        for (int i = 0; i < n; i++){
            for (int j = 0; j < m; j++){
                if (grid[i][j] == '#')continue;
                if (s[t - 1] == 'N' || s[t - 1] == '?'){
                    if (i != n - 1)dp_new[i][j] |= dp_old[i + 1][j];
                }
                if (s[t - 1] == 'S' || s[t - 1] == '?'){
                    if (i)dp_new[i][j] |= dp_old[i - 1][j];
                }

                if (s[t - 1] == 'E' || s[t - 1] == '?'){
                    if (j)dp_new[i][j] |= dp_old[i][j - 1];
                }

                if (s[t - 1] == 'W' || s[t - 1] == '?'){
                    if (j != m - 1){
                        dp_new[i][j] |= dp_old[i][j + 1];
                    }
                }
            }
        }
        
        for (int i = 0; i < n; i++){
            for (int j = 0; j < m; j++){
                dp_old[i][j] = dp_new[i][j];
                dp_new[i][j] = 0;
            }
        }
    }
    int ans = 0;
    for (int i = 0; i < n; i++){
        for (int j = 0; j < m; j++){
            ans += dp_old[i][j];
        }
    }
    cout << ans << '\n';
}

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2260 KB Output is correct
2 Correct 13 ms 2380 KB Output is correct
3 Correct 13 ms 2260 KB Output is correct
4 Correct 12 ms 2260 KB Output is correct
5 Correct 9 ms 2260 KB Output is correct
6 Correct 5 ms 2384 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2260 KB Output is correct
2 Correct 13 ms 2380 KB Output is correct
3 Correct 13 ms 2260 KB Output is correct
4 Correct 12 ms 2260 KB Output is correct
5 Correct 9 ms 2260 KB Output is correct
6 Correct 5 ms 2384 KB Output is correct
7 Correct 20 ms 2380 KB Output is correct
8 Correct 16 ms 2380 KB Output is correct
9 Correct 15 ms 2260 KB Output is correct
10 Correct 11 ms 2260 KB Output is correct
11 Correct 6 ms 2260 KB Output is correct
12 Correct 25 ms 2376 KB Output is correct
13 Correct 23 ms 2292 KB Output is correct
14 Correct 21 ms 2260 KB Output is correct
15 Correct 11 ms 2260 KB Output is correct
16 Correct 5 ms 2260 KB Output is correct
17 Correct 28 ms 2260 KB Output is correct
18 Correct 28 ms 2376 KB Output is correct
19 Correct 18 ms 2260 KB Output is correct
20 Correct 11 ms 2384 KB Output is correct
21 Correct 5 ms 2260 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 2260 KB Output is correct
2 Correct 13 ms 2380 KB Output is correct
3 Correct 13 ms 2260 KB Output is correct
4 Correct 12 ms 2260 KB Output is correct
5 Correct 9 ms 2260 KB Output is correct
6 Correct 5 ms 2384 KB Output is correct
7 Correct 20 ms 2380 KB Output is correct
8 Correct 16 ms 2380 KB Output is correct
9 Correct 15 ms 2260 KB Output is correct
10 Correct 11 ms 2260 KB Output is correct
11 Correct 6 ms 2260 KB Output is correct
12 Correct 25 ms 2376 KB Output is correct
13 Correct 23 ms 2292 KB Output is correct
14 Correct 21 ms 2260 KB Output is correct
15 Correct 11 ms 2260 KB Output is correct
16 Correct 5 ms 2260 KB Output is correct
17 Correct 28 ms 2260 KB Output is correct
18 Correct 28 ms 2376 KB Output is correct
19 Correct 18 ms 2260 KB Output is correct
20 Correct 11 ms 2384 KB Output is correct
21 Correct 5 ms 2260 KB Output is correct
22 Execution timed out 1082 ms 2516 KB Time limit exceeded
23 Halted 0 ms 0 KB -