oj.uz

Submission #594546

# Submission time Handle Problem Language Result Execution time Memory
594546 2022-07-12T16:20:34 Z snasibov05 Stations (IOI20_stations) C++14
100 / 100
 903 ms 876 KB 
#include "stations.h"
#include <bits/stdc++.h>

using namespace std;

int tmm = 0;

void dfs(int cur, int pr, vector<int>& tin, vector<int>& tout, vector<int>& d, vector<vector<int>>& ed) {

    tin[cur] = tmm++;
    d[cur] = d[pr] + 1;
    for (auto to : ed[cur]) {
        if (to == pr) continue;
        dfs(to, cur, tin, tout, d, ed);
    }
    tout[cur] = tmm++;

}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {

    vector<vector<int>> ed(n);
    for (int i = 0; i < n-1; ++i) {
        ed[u[i]].push_back(v[i]);
        ed[v[i]].push_back(u[i]);
    }

    vector<int> d(n), tin(n), tout(n);
    tmm = 0, d[0] = -1;
    dfs(0, 0, tin, tout, d, ed);

    vector<int> label(n);
    for (int i = 0; i < n; ++i){
        if (d[i] % 2 == 0) label[i] = tin[i];
        else label[i] = tout[i];
    }

    vector<pair<int, int>> arr;
    for (int i = 0; i < n; ++i) arr.push_back({label[i], i});

    int x = 0;
    sort(arr.begin(), arr.end());
    for (int i = 0; i < n; ++i) label[arr[i].second] = x++;

    return label;
}

int find_next_station(int s, int t, vector<int> c) {

    sort(c.begin(), c.end());
    if (s < c[0]){
        int prev = s;
        for (int i = 0; i < c.size() - 1; ++i){
            if (prev <= t && t <= c[i]) return c[i];
            prev = c[i];
        }
        return c.back();
    } else{
        int prev = s;
        for (int i = c.size() - 1; i > 0; --i){
            if (c[i] <= t && t <= prev) return c[i];
            prev = c[i];
        }
        return c[0];
    }

}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:53:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |         for (int i = 0; i < c.size() - 1; ++i){
      |                         ~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 562 ms 676 KB Output is correct
2 Correct 470 ms 620 KB Output is correct
3 Correct 869 ms 420 KB Output is correct
4 Correct 697 ms 484 KB Output is correct
5 Correct 590 ms 420 KB Output is correct
6 Correct 439 ms 676 KB Output is correct
7 Correct 430 ms 676 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 4 ms 492 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 439 ms 504 KB Output is correct
2 Correct 569 ms 548 KB Output is correct
3 Correct 778 ms 500 KB Output is correct
4 Correct 602 ms 416 KB Output is correct
5 Correct 484 ms 416 KB Output is correct
6 Correct 433 ms 504 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 583 ms 676 KB Output is correct
2 Correct 442 ms 632 KB Output is correct
3 Correct 789 ms 500 KB Output is correct
4 Correct 657 ms 420 KB Output is correct
5 Correct 644 ms 420 KB Output is correct
6 Correct 500 ms 628 KB Output is correct
7 Correct 477 ms 632 KB Output is correct
8 Correct 2 ms 500 KB Output is correct
9 Correct 3 ms 492 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 570 ms 500 KB Output is correct
12 Correct 502 ms 760 KB Output is correct
13 Correct 456 ms 748 KB Output is correct
14 Correct 413 ms 548 KB Output is correct
15 Correct 47 ms 492 KB Output is correct
16 Correct 65 ms 620 KB Output is correct
17 Correct 97 ms 548 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 903 ms 488 KB Output is correct
2 Correct 654 ms 420 KB Output is correct
3 Correct 542 ms 420 KB Output is correct
4 Correct 1 ms 496 KB Output is correct
5 Correct 4 ms 500 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 529 ms 416 KB Output is correct
8 Correct 849 ms 416 KB Output is correct
9 Correct 645 ms 420 KB Output is correct
10 Correct 534 ms 536 KB Output is correct
11 Correct 6 ms 500 KB Output is correct
12 Correct 5 ms 500 KB Output is correct
13 Correct 3 ms 492 KB Output is correct
14 Correct 3 ms 500 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 435 ms 416 KB Output is correct
17 Correct 426 ms 420 KB Output is correct
18 Correct 468 ms 504 KB Output is correct
19 Correct 454 ms 420 KB Output is correct
20 Correct 521 ms 420 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 526 ms 636 KB Output is correct
2 Correct 390 ms 640 KB Output is correct
3 Correct 851 ms 416 KB Output is correct
4 Correct 614 ms 512 KB Output is correct
5 Correct 550 ms 420 KB Output is correct
6 Correct 379 ms 676 KB Output is correct
7 Correct 362 ms 544 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 492 KB Output is correct
10 Correct 0 ms 488 KB Output is correct
11 Correct 457 ms 616 KB Output is correct
12 Correct 515 ms 548 KB Output is correct
13 Correct 861 ms 416 KB Output is correct
14 Correct 669 ms 420 KB Output is correct
15 Correct 550 ms 420 KB Output is correct
16 Correct 478 ms 676 KB Output is correct
17 Correct 583 ms 416 KB Output is correct
18 Correct 421 ms 876 KB Output is correct
19 Correct 346 ms 628 KB Output is correct
20 Correct 409 ms 500 KB Output is correct
21 Correct 58 ms 492 KB Output is correct
22 Correct 66 ms 504 KB Output is correct
23 Correct 101 ms 544 KB Output is correct
24 Correct 5 ms 500 KB Output is correct
25 Correct 5 ms 488 KB Output is correct
26 Correct 5 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 528 ms 508 KB Output is correct
30 Correct 502 ms 420 KB Output is correct
31 Correct 464 ms 444 KB Output is correct
32 Correct 466 ms 508 KB Output is correct
33 Correct 415 ms 508 KB Output is correct
34 Correct 292 ms 544 KB Output is correct
35 Correct 365 ms 632 KB Output is correct
36 Correct 430 ms 632 KB Output is correct
37 Correct 434 ms 712 KB Output is correct
38 Correct 453 ms 748 KB Output is correct
39 Correct 400 ms 628 KB Output is correct
40 Correct 420 ms 752 KB Output is correct
41 Correct 456 ms 712 KB Output is correct
42 Correct 54 ms 576 KB Output is correct
43 Correct 105 ms 568 KB Output is correct
44 Correct 139 ms 636 KB Output is correct
45 Correct 162 ms 508 KB Output is correct
46 Correct 285 ms 612 KB Output is correct
47 Correct 321 ms 740 KB Output is correct
48 Correct 66 ms 660 KB Output is correct
49 Correct 59 ms 648 KB Output is correct