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Submission #540707

# Submission time Handle Problem Language Result Execution time Memory
540707 2022-03-21T13:02:02 Z MilosMilutinovic Stations (IOI20_stations) C++14
100 / 100
 796 ms 784 KB 
#include "stations.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
  vector<vector<int>> g(n);
  for (int i = 0; i + 1 < n; i++) {
    g[u[i]].push_back(v[i]);
    g[v[i]].push_back(u[i]);
  }
  vector<int> tin(n), tout(n), lab(n);
  int T = 0;
  function<void(int, int, int)> Dfs = [&](int v, int pv, int d) {
    if (d % 2 == 0) {
      lab[v] = ++T;
    }
    for (int u : g[v]) {
      if (u == pv) {
        continue;
      }
      Dfs(u, v, d ^ 1);
    }
    if (d % 2 == 1) {
      lab[v] = ++T;
    }
  };
  Dfs(0, 0, 0);
  return lab;
}

int find_next_station(int s, int t, vector<int> c) {
  int n = (int) c.size();
  if (n == 1) {
    return c[0];
  }
  for (int i = 0; i < n; i++) {
    if (c[i] == t) {
      return c[i];
    }
  }
  for (int i = 0; i < n; i++) {
    assert(s != c[i]);
  }
  if (s < c[0]) {
    if (t >= s && t <= c[0]) {
      return c[0];
    }
    for (int i = 1; i + 1 < n; i++) {
      if (t > c[i - 1] && t <= c[i]) {
        return c[i];
      }
    }
    return c[n - 1];
  } else {
    assert(s > c[n - 1]);
    if (t >= c[n - 1] && t <= s) {
      return c[n - 1];
    }
    for (int i = n - 2; i > 0; i--) {
      if (t >= c[i] && t < c[i + 1]) {
        return c[i];
      }
    }
    return c[0];
  }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 422 ms 624 KB Output is correct
2 Correct 406 ms 676 KB Output is correct
3 Correct 762 ms 568 KB Output is correct
4 Correct 587 ms 544 KB Output is correct
5 Correct 514 ms 504 KB Output is correct
6 Correct 384 ms 632 KB Output is correct
7 Correct 379 ms 544 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 6 ms 500 KB Output is correct
10 Correct 1 ms 492 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 410 ms 496 KB Output is correct
2 Correct 483 ms 632 KB Output is correct
3 Correct 763 ms 416 KB Output is correct
4 Correct 585 ms 500 KB Output is correct
5 Correct 548 ms 504 KB Output is correct
6 Correct 396 ms 504 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 485 ms 636 KB Output is correct
2 Correct 392 ms 672 KB Output is correct
3 Correct 796 ms 480 KB Output is correct
4 Correct 619 ms 508 KB Output is correct
5 Correct 529 ms 420 KB Output is correct
6 Correct 430 ms 628 KB Output is correct
7 Correct 426 ms 636 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 7 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 497 ms 416 KB Output is correct
12 Correct 390 ms 708 KB Output is correct
13 Correct 402 ms 784 KB Output is correct
14 Correct 401 ms 544 KB Output is correct
15 Correct 45 ms 444 KB Output is correct
16 Correct 48 ms 588 KB Output is correct
17 Correct 103 ms 500 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 758 ms 416 KB Output is correct
2 Correct 599 ms 504 KB Output is correct
3 Correct 436 ms 508 KB Output is correct
4 Correct 3 ms 496 KB Output is correct
5 Correct 4 ms 492 KB Output is correct
6 Correct 0 ms 500 KB Output is correct
7 Correct 498 ms 416 KB Output is correct
8 Correct 754 ms 420 KB Output is correct
9 Correct 535 ms 504 KB Output is correct
10 Correct 514 ms 420 KB Output is correct
11 Correct 5 ms 492 KB Output is correct
12 Correct 5 ms 492 KB Output is correct
13 Correct 4 ms 500 KB Output is correct
14 Correct 4 ms 500 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 445 ms 420 KB Output is correct
17 Correct 420 ms 504 KB Output is correct
18 Correct 381 ms 484 KB Output is correct
19 Correct 422 ms 504 KB Output is correct
20 Correct 446 ms 420 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 413 ms 656 KB Output is correct
2 Correct 374 ms 676 KB Output is correct
3 Correct 741 ms 420 KB Output is correct
4 Correct 559 ms 416 KB Output is correct
5 Correct 496 ms 420 KB Output is correct
6 Correct 353 ms 696 KB Output is correct
7 Correct 392 ms 548 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 2 ms 492 KB Output is correct
10 Correct 1 ms 500 KB Output is correct
11 Correct 368 ms 504 KB Output is correct
12 Correct 473 ms 548 KB Output is correct
13 Correct 652 ms 416 KB Output is correct
14 Correct 480 ms 420 KB Output is correct
15 Correct 500 ms 508 KB Output is correct
16 Correct 397 ms 488 KB Output is correct
17 Correct 543 ms 416 KB Output is correct
18 Correct 370 ms 544 KB Output is correct
19 Correct 379 ms 712 KB Output is correct
20 Correct 411 ms 496 KB Output is correct
21 Correct 53 ms 468 KB Output is correct
22 Correct 59 ms 500 KB Output is correct
23 Correct 93 ms 544 KB Output is correct
24 Correct 5 ms 492 KB Output is correct
25 Correct 6 ms 492 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 4 ms 500 KB Output is correct
28 Correct 2 ms 500 KB Output is correct
29 Correct 429 ms 508 KB Output is correct
30 Correct 409 ms 500 KB Output is correct
31 Correct 441 ms 420 KB Output is correct
32 Correct 364 ms 504 KB Output is correct
33 Correct 463 ms 420 KB Output is correct
34 Correct 246 ms 676 KB Output is correct
35 Correct 350 ms 752 KB Output is correct
36 Correct 369 ms 784 KB Output is correct
37 Correct 386 ms 660 KB Output is correct
38 Correct 377 ms 632 KB Output is correct
39 Correct 387 ms 576 KB Output is correct
40 Correct 403 ms 600 KB Output is correct
41 Correct 390 ms 508 KB Output is correct
42 Correct 56 ms 572 KB Output is correct
43 Correct 87 ms 600 KB Output is correct
44 Correct 120 ms 500 KB Output is correct
45 Correct 151 ms 504 KB Output is correct
46 Correct 251 ms 544 KB Output is correct
47 Correct 244 ms 548 KB Output is correct
48 Correct 57 ms 600 KB Output is correct
49 Correct 61 ms 504 KB Output is correct