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Submission #853693

# Submission time Handle Problem Language Result Execution time Memory
853693 2023-09-25T03:20:05 Z NeroZein Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 963 ms 112320 KB 
#include "bits/stdc++.h"
using namespace std;

#ifdef Nero
#include "Deb.h"
#else
#define deb(...)
#endif

const int N = 30004;

int b[N]; 
int seen[N];
vector<int> in[N];
bitset<N> vis[N]; 

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n, m;
  cin >> n >> m;
  for (int i = 0; i < m; ++i) {
    int p;
    cin >> b[i] >> p;
    in[b[i]].push_back(p); 
  }
  fill(seen, seen + N, -1); 
  priority_queue<array<int, 3>> pq; 
  for (int p : in[b[0]]) {
    pq.push({0, p, b[0]});
    vis[p][b[0]] = 1; 
  }
  seen[b[0]] = 0;
  while (!pq.empty()) {
    auto [c, p, v] = pq.top();
    c = -c; 
    pq.pop();
    int forward = v + p;
    if (forward < n && !vis[p][forward]) {
      if (seen[forward] == -1) {
        seen[forward] = c + 1; 
        for (int np : in[forward]) {
          vis[np][forward] = 1; 
          pq.push({-(c + 1), np, forward}); 
        }
      }
      vis[p][forward] = 1; 
      pq.push({-(c + 1), p, forward}); 
    }
    int backward = v - p;
    if (backward >= 0 && !vis[p][backward]) {
      if (seen[backward] == -1) {
        seen[backward] = c + 1; 
        for (int np : in[backward]) {
          vis[np][backward] = 1; 
          pq.push({-(c + 1), np, backward}); 
        }
      }
      vis[p][backward] = 1; 
      pq.push({-(c + 1), p, backward}); 
    }
  }
  cout << seen[b[1]] << '\n';
  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 0 ms 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4696 KB Output is correct
11 Correct 2 ms 4696 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 2 ms 4700 KB Output is correct
15 Correct 2 ms 4700 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4696 KB Output is correct
11 Correct 2 ms 4700 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 2 ms 4896 KB Output is correct
15 Correct 2 ms 4696 KB Output is correct
16 Correct 1 ms 4440 KB Output is correct
17 Correct 2 ms 4696 KB Output is correct
18 Correct 1 ms 8536 KB Output is correct
19 Correct 2 ms 8536 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 8536 KB Output is correct
22 Correct 1 ms 4440 KB Output is correct
23 Correct 3 ms 10584 KB Output is correct
24 Correct 3 ms 10840 KB Output is correct
25 Correct 2 ms 10584 KB Output is correct
26 Correct 2 ms 4696 KB Output is correct
27 Correct 2 ms 10840 KB Output is correct
28 Correct 2 ms 8796 KB Output is correct
29 Correct 8 ms 2904 KB Output is correct
30 Correct 2 ms 2392 KB Output is correct
31 Correct 4 ms 2392 KB Output is correct
32 Correct 3 ms 4440 KB Output is correct
33 Correct 13 ms 4700 KB Output is correct
34 Correct 13 ms 4700 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2648 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 0 ms 2392 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4696 KB Output is correct
11 Correct 2 ms 4700 KB Output is correct
12 Correct 1 ms 4440 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 2 ms 4700 KB Output is correct
15 Correct 2 ms 4700 KB Output is correct
16 Correct 1 ms 4440 KB Output is correct
17 Correct 2 ms 4696 KB Output is correct
18 Correct 1 ms 8536 KB Output is correct
19 Correct 1 ms 8536 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 2 ms 8536 KB Output is correct
22 Correct 1 ms 4440 KB Output is correct
23 Correct 2 ms 10584 KB Output is correct
24 Correct 3 ms 10844 KB Output is correct
25 Correct 3 ms 10584 KB Output is correct
26 Correct 1 ms 4696 KB Output is correct
27 Correct 2 ms 10840 KB Output is correct
28 Correct 2 ms 8796 KB Output is correct
29 Correct 7 ms 2648 KB Output is correct
30 Correct 2 ms 2392 KB Output is correct
31 Correct 4 ms 2396 KB Output is correct
32 Correct 3 ms 4440 KB Output is correct
33 Correct 13 ms 4696 KB Output is correct
34 Correct 13 ms 4696 KB Output is correct
35 Correct 18 ms 11544 KB Output is correct
36 Correct 4 ms 10840 KB Output is correct
37 Correct 33 ms 7448 KB Output is correct
38 Correct 27 ms 11608 KB Output is correct
39 Correct 27 ms 11608 KB Output is correct
40 Correct 27 ms 11608 KB Output is correct
41 Correct 28 ms 11608 KB Output is correct
42 Correct 7 ms 5464 KB Output is correct
43 Correct 7 ms 11612 KB Output is correct
44 Correct 6 ms 3204 KB Output is correct
45 Correct 71 ms 5460 KB Output is correct
46 Correct 69 ms 5460 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 0 ms 2392 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4696 KB Output is correct
11 Correct 2 ms 4696 KB Output is correct
12 Correct 2 ms 4696 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 2 ms 4696 KB Output is correct
15 Correct 2 ms 4696 KB Output is correct
16 Correct 1 ms 4440 KB Output is correct
17 Correct 3 ms 4696 KB Output is correct
18 Correct 2 ms 8536 KB Output is correct
19 Correct 1 ms 8536 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 1 ms 8540 KB Output is correct
22 Correct 1 ms 4440 KB Output is correct
23 Correct 2 ms 10784 KB Output is correct
24 Correct 3 ms 10840 KB Output is correct
25 Correct 2 ms 10584 KB Output is correct
26 Correct 2 ms 4696 KB Output is correct
27 Correct 2 ms 10840 KB Output is correct
28 Correct 2 ms 8796 KB Output is correct
29 Correct 7 ms 2648 KB Output is correct
30 Correct 2 ms 2396 KB Output is correct
31 Correct 4 ms 2396 KB Output is correct
32 Correct 3 ms 4440 KB Output is correct
33 Correct 13 ms 4700 KB Output is correct
34 Correct 14 ms 4696 KB Output is correct
35 Correct 18 ms 11544 KB Output is correct
36 Correct 4 ms 10840 KB Output is correct
37 Correct 27 ms 7448 KB Output is correct
38 Correct 27 ms 11608 KB Output is correct
39 Correct 27 ms 11608 KB Output is correct
40 Correct 28 ms 11676 KB Output is correct
41 Correct 27 ms 11608 KB Output is correct
42 Correct 6 ms 5464 KB Output is correct
43 Correct 8 ms 11608 KB Output is correct
44 Correct 6 ms 3400 KB Output is correct
45 Correct 67 ms 5460 KB Output is correct
46 Correct 68 ms 5460 KB Output is correct
47 Correct 99 ms 14164 KB Output is correct
48 Correct 5 ms 9048 KB Output is correct
49 Correct 4 ms 7000 KB Output is correct
50 Correct 3 ms 4956 KB Output is correct
51 Correct 56 ms 112300 KB Output is correct
52 Correct 60 ms 112320 KB Output is correct
53 Correct 12 ms 21848 KB Output is correct
54 Correct 1 ms 2392 KB Output is correct
55 Correct 1 ms 2392 KB Output is correct
56 Correct 6 ms 3416 KB Output is correct
57 Correct 47 ms 4696 KB Output is correct
58 Correct 7 ms 5464 KB Output is correct
59 Correct 8 ms 5524 KB Output is correct
60 Correct 10 ms 5524 KB Output is correct
61 Correct 21 ms 112024 KB Output is correct
62 Correct 18 ms 32600 KB Output is correct
63 Correct 301 ms 5260 KB Output is correct
64 Correct 373 ms 5400 KB Output is correct
65 Correct 566 ms 5712 KB Output is correct
66 Correct 963 ms 5716 KB Output is correct
67 Correct 949 ms 5720 KB Output is correct