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Submission #496292

# Submission time Handle Problem Language Result Execution time Memory
496292 2021-12-21T05:07:23 Z Nalrimet Nautilus (BOI19_nautilus) C++17
66 / 100
 26 ms 2512 KB 
#include<bits/stdc++.h>

using namespace std;

const int N = 1e2 + 5;
const int inf = 1000000000;

#define int long long
#define F first
#define S second
#define pb push_back
#define ppb pop_back

int r, c, m, ans;
bool block[N][N], ok[N][N][N], used[N][N][N];
char s[5005];


void rec(int x, int y, int step){
    used[x][y][step] = 1;
    if(step == 0){
        ok[x][y][step] = 1;
        return;
    }
    if(s[step] == '?'){
        if(!block[x + 1][y] && !used[x + 1][y][step - 1]) rec(x + 1, y, step - 1);
        if(ok[x + 1][y][step - 1]) ok[x][y][step] = 1;
        if(!block[x - 1][y] && !used[x - 1][y][step - 1]) rec(x - 1, y, step - 1);
        if(ok[x - 1][y][step - 1]) ok[x][y][step] = 1;
        if(!block[x][y + 1] && !used[x][y + 1][step - 1]) rec(x, y + 1, step - 1);
        if(ok[x][y + 1][step - 1]) ok[x][y][step] = 1;
        if(!block[x][y - 1] && !used[x][y - 1][step - 1]) rec(x, y - 1, step - 1);
        if(ok[x][y - 1][step - 1]) ok[x][y][step] = 1;
    }
    else if(s[step] == 'N'){
        if(!block[x + 1][y] && !used[x + 1][y][step - 1]) rec(x + 1, y, step - 1);
        if(ok[x + 1][y][step - 1]) ok[x][y][step] = 1;
    }
    else if(s[step] == 'S'){
        if(!block[x - 1][y] && !used[x - 1][y][step - 1]) rec(x - 1, y, step - 1);
        if(ok[x - 1][y][step - 1]) ok[x][y][step] = 1;
    }
    else if(s[step] == 'W'){
        if(!block[x][y + 1] && !used[x][y + 1][step - 1]) rec(x, y + 1, step - 1);
        if(ok[x][y + 1][step - 1]) ok[x][y][step] = 1;
    }
    else{
        if(!block[x][y - 1] && !used[x][y - 1][step - 1]) rec(x, y - 1, step - 1);
        if(ok[x][y - 1][step - 1]) ok[x][y][step] = 1;
    }
}

 main() {

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> r >> c >> m;

    for(int i = 1; i <= r; ++i){
        block[i][0] = 1;
        block[i][c + 1] = 1;
        for(int j = 1; j <= c; ++j){
            char c1;
            cin >> c1;
            if(c1 == '#') block[i][j] = 1;
//            cout << block[i][j];
        }
//        cout << '\n';
    }

    for(int j = 1; j <= c; ++j){
        block[0][j] = 1;
        block[r + 1][j] = 1;
    }

    for(int i = 1; i <= m; ++i){
        cin >> s[i];
    }

    for(int i = 1; i <= r; ++i){
        for(int j = 1; j <= c; ++j){
            if(!block[i][j]){
//                cout << i << ' ' << j << '\n';
                rec(i, j, m);
                if(ok[i][j][m]) ans++;
            }
        }
    }

    cout << ans;

    return 0;

}

Compilation message

nautilus.cpp:53:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   53 |  main() {
      |  ^~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 2380 KB Output is correct
2 Correct 2 ms 1484 KB Output is correct
3 Correct 1 ms 1356 KB Output is correct
4 Correct 1 ms 1356 KB Output is correct
5 Correct 1 ms 1356 KB Output is correct
6 Correct 0 ms 332 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 2380 KB Output is correct
2 Correct 2 ms 1484 KB Output is correct
3 Correct 1 ms 1356 KB Output is correct
4 Correct 1 ms 1356 KB Output is correct
5 Correct 1 ms 1356 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 19 ms 2380 KB Output is correct
8 Correct 5 ms 2376 KB Output is correct
9 Correct 2 ms 1488 KB Output is correct
10 Correct 1 ms 1488 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 22 ms 2496 KB Output is correct
13 Correct 26 ms 2492 KB Output is correct
14 Correct 17 ms 2468 KB Output is correct
15 Correct 2 ms 1616 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 26 ms 2512 KB Output is correct
18 Correct 25 ms 2512 KB Output is correct
19 Correct 8 ms 2384 KB Output is correct
20 Correct 5 ms 2384 KB Output is correct
21 Correct 1 ms 336 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 2380 KB Output is correct
2 Correct 2 ms 1484 KB Output is correct
3 Correct 1 ms 1356 KB Output is correct
4 Correct 1 ms 1356 KB Output is correct
5 Correct 1 ms 1356 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 19 ms 2380 KB Output is correct
8 Correct 5 ms 2376 KB Output is correct
9 Correct 2 ms 1488 KB Output is correct
10 Correct 1 ms 1488 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 22 ms 2496 KB Output is correct
13 Correct 26 ms 2492 KB Output is correct
14 Correct 17 ms 2468 KB Output is correct
15 Correct 2 ms 1616 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 26 ms 2512 KB Output is correct
18 Correct 25 ms 2512 KB Output is correct
19 Correct 8 ms 2384 KB Output is correct
20 Correct 5 ms 2384 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Runtime error 2 ms 716 KB Execution killed with signal 11
23 Halted 0 ms 0 KB -