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Submission #785614

# Submission time Handle Problem Language Result Execution time Memory
785614 2023-07-17T10:43:03 Z alex_2008 Awesome Arrowland Adventure (eJOI19_adventure) C++14
100 / 100
 88 ms 20456 KB 
#include <iostream>
#include <vector>
#include <cmath>
#include <set>
using namespace std;
const int N = 550, INF = 1e9 + 10;
char a[N][N];
int vertex[N][N];
char dir[4] = { 'N', 'E', 'S', 'W' };
int dx[4] = { -1, 0, 1, 0 };
int dy[4] = { 0, 1, 0, -1 };
int n, m;
bool ch(int x, int y) {
	if (x >= 1 && x <= n && y >= 1 && y <= m) return true;
	return false;
}
int main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cin >> a[i][j];
			vertex[i][j] = (i - 1) * m + j;
		}
	}
	vector <vector<pair<int, int>>> G(n * m + 1);
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			if (a[i][j] == 'X') continue;
			int ind = 0;
			for (int k = 0; k < 4; k++) {
				if (a[i][j] == dir[k]) {
					ind = k;
					break;
				}
			}
			int cost = 0;
			while (cost != 4) {
				if (ch(i + dx[ind], j + dy[ind])) {
					G[vertex[i][j]].push_back({ vertex[i + dx[ind]][j + dy[ind]], cost });
				}
				cost++;
				ind = (ind + 1) % 4;
			}
		}
	}
	vector <int> dist(n * m + 1, INF);
	dist[1] = 0;
	set <pair<int, int>> ms;
	ms.insert({ 0, 1 });
	while (!ms.empty()) {
		int v = ms.begin()->second; ms.erase(ms.begin());
		for (auto it : G[v]) {
			if (dist[v] + it.second < dist[it.first]) {
				ms.erase({dist[it.first], it.first});
				dist[it.first] = dist[v] + it.second;
				ms.insert({ dist[it.first], it.first });
			}
		}
	}
	if (dist[n * m] == INF) {
		cout << -1 << "\n";
		return 0;
	}
	cout << dist[n * m] << "\n";
}

Subtask #1
10.0 / 10.0

# 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 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
12.0 / 12.0

# 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 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 340 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 212 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 328 KB Output is correct

Subtask #3
12.0 / 12.0

# 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 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 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 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #5
50.0 / 50.0

# 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 360 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 340 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 212 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 7 ms 2004 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 8 ms 2388 KB Output is correct
38 Correct 6 ms 3668 KB Output is correct
39 Correct 88 ms 18220 KB Output is correct
40 Correct 82 ms 18208 KB Output is correct
41 Correct 27 ms 18096 KB Output is correct
42 Correct 76 ms 18192 KB Output is correct
43 Correct 82 ms 20456 KB Output is correct
44 Correct 27 ms 18092 KB Output is correct