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Submission #260799

# Submission time Handle Problem Language Result Execution time Memory
260799 2020-08-11T02:07:49 Z my99n Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 943 ms 5744 KB 
#include<bits/stdc++.h>
using namespace std;

struct A {
  long long n, w;
  bool operator < (const A & o) const {
    return w > o.w;
  } 
};

vector<int> P[30100];
int visited[30100];
long long dis[30100];
priority_queue<A> heap;

int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n, m, s, e;
  cin >> n >> m;
  for (int i = 0; i < m; i++) {
    int b, p;
    cin >> b >> p;
    P[b].push_back(p);
    if (i == 0) s = b;
    if (i == 1) e = b;
  }

  for (int i = 0; i <= n; i++) dis[i] = 1e18;

  heap.push({s, 0});

  while (!heap.empty()) {
    auto t = heap.top(); heap.pop();
    if (visited[t.n]) continue;
    visited[t.n] = 1;
    dis[t.n] = t.w;

    if (t.n == e) {
      cout << t.w << endl;
      return 0;
    }

    for (auto p : P[t.n]) {
      for (int j = 1; t.n - j*p >= 0; j++) {
        if (t.w+j < dis[t.n-j*p]) {
          dis[t.n-j*p] = t.w+j;
          heap.push({t.n - j*p, t.w+j});
          // cerr << "push " << t.n - j*p << ' ' << t.w+j;
        }
      }
      for (int j = 1; t.n + j*p < n; j++) {
        if (t.w+j < dis[t.n+j*p]) {
          dis[t.n+j*p] = t.w+j;
          heap.push({t.n + j*p, t.w+j});
          // cerr << "push " << t.n + j*p << ' ' << t.w+j;
        }
      }
    }
  }
  cout << -1 << endl;
  return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:39:13: warning: 'e' may be used uninitialized in this function [-Wmaybe-uninitialized]
     if (t.n == e) {
         ~~~~^~~~
skyscraper.cpp:31:12: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   heap.push({s, 0});
   ~~~~~~~~~^~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1024 KB Output is correct
2 Correct 1 ms 1024 KB Output is correct
3 Correct 1 ms 1024 KB Output is correct
4 Correct 1 ms 1024 KB Output is correct
5 Correct 1 ms 1024 KB Output is correct
6 Correct 1 ms 1024 KB Output is correct
7 Correct 1 ms 1024 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1024 KB Output is correct
2 Correct 1 ms 1024 KB Output is correct
3 Correct 1 ms 1024 KB Output is correct
4 Correct 1 ms 1024 KB Output is correct
5 Correct 1 ms 1024 KB Output is correct
6 Correct 2 ms 1024 KB Output is correct
7 Correct 1 ms 1024 KB Output is correct
8 Correct 1 ms 1024 KB Output is correct
9 Correct 1 ms 1024 KB Output is correct
10 Correct 1 ms 1024 KB Output is correct
11 Correct 1 ms 1024 KB Output is correct
12 Correct 1 ms 1024 KB Output is correct
13 Correct 1 ms 1024 KB Output is correct
14 Correct 1 ms 1024 KB Output is correct
15 Correct 1 ms 1024 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1024 KB Output is correct
2 Correct 1 ms 1024 KB Output is correct
3 Correct 1 ms 1024 KB Output is correct
4 Correct 1 ms 1024 KB Output is correct
5 Correct 1 ms 1024 KB Output is correct
6 Correct 1 ms 1024 KB Output is correct
7 Correct 1 ms 1024 KB Output is correct
8 Correct 1 ms 1024 KB Output is correct
9 Correct 1 ms 1024 KB Output is correct
10 Correct 1 ms 1024 KB Output is correct
11 Correct 1 ms 1024 KB Output is correct
12 Correct 1 ms 1024 KB Output is correct
13 Correct 1 ms 1024 KB Output is correct
14 Correct 1 ms 1024 KB Output is correct
15 Correct 2 ms 1024 KB Output is correct
16 Correct 1 ms 1024 KB Output is correct
17 Correct 2 ms 1152 KB Output is correct
18 Correct 1 ms 1024 KB Output is correct
19 Correct 1 ms 1024 KB Output is correct
20 Correct 5 ms 1152 KB Output is correct
21 Correct 1 ms 1024 KB Output is correct
22 Correct 1 ms 1024 KB Output is correct
23 Correct 2 ms 1152 KB Output is correct
24 Correct 2 ms 1152 KB Output is correct
25 Correct 2 ms 1152 KB Output is correct
26 Correct 1 ms 1152 KB Output is correct
27 Correct 2 ms 1152 KB Output is correct
28 Correct 2 ms 1152 KB Output is correct
29 Correct 2 ms 1408 KB Output is correct
30 Correct 2 ms 1280 KB Output is correct
31 Correct 2 ms 1280 KB Output is correct
32 Correct 2 ms 1280 KB Output is correct
33 Correct 3 ms 1408 KB Output is correct
34 Correct 2 ms 1408 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1024 KB Output is correct
2 Correct 1 ms 1024 KB Output is correct
3 Correct 1 ms 1024 KB Output is correct
4 Correct 1 ms 1024 KB Output is correct
5 Correct 1 ms 1024 KB Output is correct
6 Correct 1 ms 1024 KB Output is correct
7 Correct 1 ms 1024 KB Output is correct
8 Correct 1 ms 1024 KB Output is correct
9 Correct 2 ms 1024 KB Output is correct
10 Correct 1 ms 1024 KB Output is correct
11 Correct 1 ms 1024 KB Output is correct
12 Correct 1 ms 1024 KB Output is correct
13 Correct 2 ms 1024 KB Output is correct
14 Correct 2 ms 1024 KB Output is correct
15 Correct 1 ms 1024 KB Output is correct
16 Correct 1 ms 1024 KB Output is correct
17 Correct 2 ms 1152 KB Output is correct
18 Correct 1 ms 1024 KB Output is correct
19 Correct 1 ms 1024 KB Output is correct
20 Correct 5 ms 1152 KB Output is correct
21 Correct 1 ms 1024 KB Output is correct
22 Correct 1 ms 1024 KB Output is correct
23 Correct 2 ms 1152 KB Output is correct
24 Correct 2 ms 1152 KB Output is correct
25 Correct 2 ms 1152 KB Output is correct
26 Correct 2 ms 1152 KB Output is correct
27 Correct 1 ms 1152 KB Output is correct
28 Correct 2 ms 1152 KB Output is correct
29 Correct 3 ms 1408 KB Output is correct
30 Correct 2 ms 1280 KB Output is correct
31 Correct 2 ms 1280 KB Output is correct
32 Correct 2 ms 1280 KB Output is correct
33 Correct 3 ms 1408 KB Output is correct
34 Correct 3 ms 1408 KB Output is correct
35 Correct 8 ms 1408 KB Output is correct
36 Correct 2 ms 1152 KB Output is correct
37 Correct 6 ms 1536 KB Output is correct
38 Correct 9 ms 1536 KB Output is correct
39 Correct 8 ms 1408 KB Output is correct
40 Correct 9 ms 1536 KB Output is correct
41 Correct 11 ms 1536 KB Output is correct
42 Correct 6 ms 1280 KB Output is correct
43 Correct 6 ms 1280 KB Output is correct
44 Correct 50 ms 1280 KB Output is correct
45 Correct 9 ms 1664 KB Output is correct
46 Correct 8 ms 1664 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1024 KB Output is correct
2 Correct 1 ms 1024 KB Output is correct
3 Correct 1 ms 1024 KB Output is correct
4 Correct 1 ms 1024 KB Output is correct
5 Correct 1 ms 1024 KB Output is correct
6 Correct 1 ms 1024 KB Output is correct
7 Correct 1 ms 1024 KB Output is correct
8 Correct 1 ms 1024 KB Output is correct
9 Correct 1 ms 1024 KB Output is correct
10 Correct 1 ms 1024 KB Output is correct
11 Correct 1 ms 1024 KB Output is correct
12 Correct 1 ms 1024 KB Output is correct
13 Correct 1 ms 1024 KB Output is correct
14 Correct 1 ms 1024 KB Output is correct
15 Correct 2 ms 1152 KB Output is correct
16 Correct 1 ms 1024 KB Output is correct
17 Correct 2 ms 1152 KB Output is correct
18 Correct 1 ms 1024 KB Output is correct
19 Correct 1 ms 1024 KB Output is correct
20 Correct 7 ms 1312 KB Output is correct
21 Correct 1 ms 1024 KB Output is correct
22 Correct 2 ms 1024 KB Output is correct
23 Correct 1 ms 1152 KB Output is correct
24 Correct 2 ms 1152 KB Output is correct
25 Correct 2 ms 1152 KB Output is correct
26 Correct 1 ms 1152 KB Output is correct
27 Correct 1 ms 1152 KB Output is correct
28 Correct 2 ms 1152 KB Output is correct
29 Correct 2 ms 1408 KB Output is correct
30 Correct 2 ms 1280 KB Output is correct
31 Correct 2 ms 1280 KB Output is correct
32 Correct 2 ms 1280 KB Output is correct
33 Correct 3 ms 1408 KB Output is correct
34 Correct 3 ms 1536 KB Output is correct
35 Correct 8 ms 1408 KB Output is correct
36 Correct 2 ms 1152 KB Output is correct
37 Correct 6 ms 1536 KB Output is correct
38 Correct 9 ms 1568 KB Output is correct
39 Correct 8 ms 1408 KB Output is correct
40 Correct 9 ms 1536 KB Output is correct
41 Correct 10 ms 1536 KB Output is correct
42 Correct 7 ms 1280 KB Output is correct
43 Correct 6 ms 1280 KB Output is correct
44 Correct 41 ms 1280 KB Output is correct
45 Correct 9 ms 1664 KB Output is correct
46 Correct 8 ms 1664 KB Output is correct
47 Correct 11 ms 2680 KB Output is correct
48 Correct 8 ms 1664 KB Output is correct
49 Correct 8 ms 1664 KB Output is correct
50 Correct 6 ms 1664 KB Output is correct
51 Correct 18 ms 4212 KB Output is correct
52 Correct 19 ms 3192 KB Output is correct
53 Correct 12 ms 2304 KB Output is correct
54 Correct 3 ms 1792 KB Output is correct
55 Correct 3 ms 1792 KB Output is correct
56 Correct 726 ms 3188 KB Output is correct
57 Correct 5 ms 3568 KB Output is correct
58 Correct 943 ms 1916 KB Output is correct
59 Correct 10 ms 1916 KB Output is correct
60 Correct 9 ms 1948 KB Output is correct
61 Correct 10 ms 1916 KB Output is correct
62 Correct 13 ms 2304 KB Output is correct
63 Correct 30 ms 3700 KB Output is correct
64 Correct 30 ms 3700 KB Output is correct
65 Correct 38 ms 5744 KB Output is correct
66 Correct 54 ms 5744 KB Output is correct
67 Correct 42 ms 5744 KB Output is correct