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Submission #400771

# Submission time Handle Problem Language Result Execution time Memory
400771 2021-05-08T16:04:43 Z BERNARB01 Jakarta Skyscrapers (APIO15_skyscraper) C++17
36 / 100
 247 ms 262148 KB 
#include <bits/stdc++.h>

using namespace std;

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n, m;
	cin >> n >> m;
	vector<vector<pair<int, long long>>> g(n);
	int target, start;
	for (int i = 0; i < m; i++) {
		int b, p;
		cin >> b >> p;
		if (i == 0) { 
			start = b;
		}
		if (i == 1) {
			target = b;
		}
		for (int j = b + p, w = 1; j < n; j += p, w++) {
			g[b].emplace_back(j, w);
		}
		for (int j = b - p, w = 1; j >= 0; j -= p, w++) {
			g[b].emplace_back(j, w);
		}
	}
	const long long inf = (long long) 8e18L;
	vector<long long> dist(n, inf);
	priority_queue<pair<long long, int>> s;
	dist[start] = 0;
	s.emplace(0, start);
	while (!s.empty()) {
		long long exp = -s.top().first;
		int u = s.top().second;
		s.pop();
		if (exp != dist[u]) {
			continue;
		}
		if (u == target) {
			break;
		}
		for (auto [v, w] : g[u]) {
			if (dist[u] + w < dist[v]) {
				dist[v] = dist[u] + w;
				s.emplace(-dist[v], v);
			}
		}
	}
	cout << (dist[target] >= inf ? -1 : dist[target]) << '\n';
	return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:31:12: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
   31 |  dist[start] = 0;
      |            ^
skyscraper.cpp:40:3: warning: 'target' may be used uninitialized in this function [-Wmaybe-uninitialized]
   40 |   if (u == target) {
      |   ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 6 ms 4548 KB Output is correct
13 Correct 6 ms 4556 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 6 ms 4484 KB Output is correct
13 Correct 6 ms 4556 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 1 ms 452 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 844 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 68 ms 64508 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 3 ms 708 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 83 ms 66280 KB Output is correct
27 Correct 79 ms 66148 KB Output is correct
28 Correct 2 ms 844 KB Output is correct
29 Correct 4 ms 1868 KB Output is correct
30 Correct 3 ms 972 KB Output is correct
31 Correct 3 ms 1228 KB Output is correct
32 Correct 2 ms 972 KB Output is correct
33 Correct 5 ms 3016 KB Output is correct
34 Correct 4 ms 3144 KB Output is correct

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 5 ms 4548 KB Output is correct
13 Correct 6 ms 4556 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 452 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 844 KB Output is correct
18 Correct 1 ms 448 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 75 ms 64656 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 2 ms 716 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 83 ms 66364 KB Output is correct
27 Correct 78 ms 66148 KB Output is correct
28 Correct 2 ms 844 KB Output is correct
29 Correct 4 ms 1868 KB Output is correct
30 Correct 2 ms 972 KB Output is correct
31 Correct 2 ms 1228 KB Output is correct
32 Correct 3 ms 1064 KB Output is correct
33 Correct 5 ms 3016 KB Output is correct
34 Correct 5 ms 3144 KB Output is correct
35 Correct 9 ms 3660 KB Output is correct
36 Correct 2 ms 716 KB Output is correct
37 Correct 12 ms 7028 KB Output is correct
38 Correct 13 ms 5708 KB Output is correct
39 Correct 12 ms 5836 KB Output is correct
40 Correct 13 ms 5836 KB Output is correct
41 Correct 13 ms 5580 KB Output is correct
42 Runtime error 247 ms 262148 KB Execution killed with signal 9
43 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 448 KB Output is correct
12 Correct 6 ms 4548 KB Output is correct
13 Correct 6 ms 4588 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 852 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 67 ms 64484 KB Output is correct
21 Correct 1 ms 320 KB Output is correct
22 Correct 1 ms 448 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 2 ms 716 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 81 ms 66368 KB Output is correct
27 Correct 79 ms 66232 KB Output is correct
28 Correct 2 ms 844 KB Output is correct
29 Correct 4 ms 1868 KB Output is correct
30 Correct 2 ms 972 KB Output is correct
31 Correct 2 ms 1272 KB Output is correct
32 Correct 2 ms 972 KB Output is correct
33 Correct 5 ms 3016 KB Output is correct
34 Correct 5 ms 3272 KB Output is correct
35 Correct 9 ms 3656 KB Output is correct
36 Correct 3 ms 716 KB Output is correct
37 Correct 12 ms 6984 KB Output is correct
38 Correct 13 ms 5700 KB Output is correct
39 Correct 13 ms 5836 KB Output is correct
40 Correct 12 ms 5836 KB Output is correct
41 Correct 13 ms 5576 KB Output is correct
42 Runtime error 246 ms 262148 KB Execution killed with signal 9
43 Halted 0 ms 0 KB -