Submission #1009725

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1009725	2024-06-28T01:25:12 Z	asdfgrace	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	36 / 100	245 ms	262144 KB

skyscraper

#include <bits/stdc++.h>
using namespace std;

#define dbg(x) x
#define prt(x) dbg(cerr << x)
#define pv(x) dbg(cerr << #x << " = " << x << '\n')
#define pv2(x) dbg(cerr << #x << " = " << x.first << ',' << x.second << '\n')
#define parr(x) dbg(prt(#x << " = { "); for (auto y : x) prt(y << ' '); prt("}\n");)
#define parr2(x) dbg(prt(#x << " = { "); for (auto [y, z] : x) prt(y << ',' << z << "  "); prt("}\n");)
#define parr2d(x) dbg(prt(#x << ":\n"); for (auto arr : x) {parr(arr);} prt('\n'));
#define parr2d2(x) dbg(prt(#x << ":\n"); for (auto arr : x) {parr2(arr);} prt('\n'));

/*
can jump only multiples of 1 number
get from p0 to p1
can only jump if 0 or it was passed to you
everyone will only have it once?
can add o(m^2) edges and run dijkstra
alternatively, can add o(n^2) edges
*/

int main() {
  ios::sync_with_stdio(0); cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<int> a(m), b(m);
  vector<vector<array<int, 2>>> edges(n);
  for (int i = 0; i < m; i++) {
    cin >> a[i] >> b[i];
    for (int j = a[i] + b[i]; j < n; j += b[i]) {
      edges[a[i]].push_back({j, (j - a[i]) / b[i]});
    }
    for (int j = a[i] - b[i]; j >= 0; j -= b[i]) {
      edges[a[i]].push_back({j, (a[i] - j) / b[i]});
    }
  }
  priority_queue<array<int, 2>> q;
  vector<int> dist(n, 1e9);
  dist[a[0]] = 0;
  q.push({0, a[0]});
  while (q.size()) {
    int d = -q.top()[0], node = q.top()[1];
    q.pop();
    if (d != dist[node]) continue;
    for (auto [next, wt] : edges[node]) {
      if (dist[node] + wt < dist[next]) {
        dist[next] = dist[node] + wt;
        q.push({-dist[next], next});
      }
    }
  }
  cout << (dist[a[1]] == 1e9 ? -1 : dist[a[1]]) << '\n';
}

/*
any observations help

check every line
IF YOUR LINES AREN'T WRONG
CHECK IF YOUR LINES ARE IN THE RIGHT ORDER

NEVER GIVE UP
*/

Subtask #1
10.0 / 10.0

#	Verdict	Memory	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	408 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	344 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	3 ms	2516 KB	Output is correct
13	Correct	3 ms	2528 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct

Subtask #3
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	3 ms	2516 KB	Output is correct
13	Correct	4 ms	2528 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	536 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	46 ms	32448 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	604 KB	Output is correct
25	Correct	1 ms	604 KB	Output is correct
26	Correct	37 ms	33916 KB	Output is correct
27	Correct	34 ms	33368 KB	Output is correct
28	Correct	1 ms	600 KB	Output is correct
29	Correct	2 ms	1112 KB	Output is correct
30	Correct	1 ms	604 KB	Output is correct
31	Correct	2 ms	860 KB	Output is correct
32	Correct	1 ms	856 KB	Output is correct
33	Correct	3 ms	1996 KB	Output is correct
34	Correct	3 ms	1884 KB	Output is correct

Subtask #4
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	3 ms	2624 KB	Output is correct
13	Correct	3 ms	2632 KB	Output is correct
14	Correct	1 ms	344 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	604 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	45 ms	32616 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	1 ms	600 KB	Output is correct
24	Correct	1 ms	600 KB	Output is correct
25	Correct	1 ms	604 KB	Output is correct
26	Correct	37 ms	35384 KB	Output is correct
27	Correct	39 ms	34240 KB	Output is correct
28	Correct	1 ms	600 KB	Output is correct
29	Correct	2 ms	1116 KB	Output is correct
30	Correct	1 ms	604 KB	Output is correct
31	Correct	1 ms	860 KB	Output is correct
32	Correct	1 ms	860 KB	Output is correct
33	Correct	3 ms	1884 KB	Output is correct
34	Correct	3 ms	1884 KB	Output is correct
35	Correct	5 ms	2140 KB	Output is correct
36	Correct	1 ms	604 KB	Output is correct
37	Correct	7 ms	3932 KB	Output is correct
38	Correct	7 ms	3260 KB	Output is correct
39	Correct	8 ms	3420 KB	Output is correct
40	Correct	7 ms	3420 KB	Output is correct
41	Correct	9 ms	3164 KB	Output is correct
42	Runtime error	245 ms	262144 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	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	3 ms	2516 KB	Output is correct
13	Correct	3 ms	2528 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	604 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	44 ms	32476 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	600 KB	Output is correct
25	Correct	1 ms	604 KB	Output is correct
26	Correct	37 ms	35040 KB	Output is correct
27	Correct	35 ms	35520 KB	Output is correct
28	Correct	1 ms	604 KB	Output is correct
29	Correct	2 ms	1116 KB	Output is correct
30	Correct	1 ms	604 KB	Output is correct
31	Correct	1 ms	860 KB	Output is correct
32	Correct	1 ms	860 KB	Output is correct
33	Correct	3 ms	1884 KB	Output is correct
34	Correct	3 ms	1880 KB	Output is correct
35	Correct	5 ms	2140 KB	Output is correct
36	Correct	1 ms	604 KB	Output is correct
37	Correct	7 ms	3964 KB	Output is correct
38	Correct	7 ms	3232 KB	Output is correct
39	Correct	7 ms	3548 KB	Output is correct
40	Correct	7 ms	3420 KB	Output is correct
41	Correct	7 ms	3164 KB	Output is correct
42	Runtime error	233 ms	262144 KB	Execution killed with signal 9
43	Halted	0 ms	0 KB	-

Submission #1009725

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 12.0 / 12.0

Subtask #3 14.0 / 14.0

Subtask #4 0 / 21.0

Subtask #5 0 / 43.0

Subtask #1
10.0 / 10.0

Subtask #2
12.0 / 12.0

Subtask #3
14.0 / 14.0

Subtask #4
0 / 21.0

Subtask #5
0 / 43.0