oj.uz

Submission #609196

# Submission time Handle Problem Language Result Execution time Memory
609196 2022-07-27T12:46:11 Z Mher Stations (IOI20_stations) C++14
100 / 100
 1059 ms 916 KB 
#include <bits/stdc++.h>
#include "stations.h"
#include <vector>

using namespace std;

int sz;
vector<vector<int>> g;
vector<int> labels;
int cnt = 0;

void dfs(int v, int p)
{
    int tin = cnt++;
    for (int to : g[v])
    {
        if (to == p)
            continue;

        dfs(to, v);
    }
    int tout = cnt++;
    labels[v] = (tin % 2 == 0 ? tin : tout) / 2;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	labels = vector<int>(n);
	sz = n;
	g = vector<vector<int>>(n);
	cnt = 0;
	for (int i = 0; i < n - 1; i++)
    {
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
    }
    dfs(0, -1);
    return labels;
}

bool check(double tin, double tout, int m)
{
    return tin <= m && tout >= m;
}

int find_next_station(int s, int t, vector<int> c) {
    if (s == 0)
    {
        for (int i = 1; i < c.size(); i++)
        {
            if (check(c[i - 1] + .5, c[i], t))
                return c[i];
        }
        return c[0];
    }
    else if (s > c[0])
    {
        if (!check(c[1] - .5, s, t))
            return c[0];

        for (int i = 1; i < c.size() - 1; i++)
        {
            if (check(c[i], c[i + 1] - .5, t))
                return c[i];
        }
        return c[c.size() - 1];
    }
    else
    {
        if (!check(s, c[c.size() - 2] + .5, t))
            return c[c.size() - 1];

        for (int i = 1; i < c.size() - .5; i++)
        {
            if (check(c[i - 1] + .5, c[i], t))
                return c[i];
        }
        return c[0];
    }
}

/*
1
5 10
0 1
1 2
1 3
2 4
2
2 0 1
1 3 3

*/

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:48:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         for (int i = 1; i < c.size(); i++)
      |                         ~~^~~~~~~~~~
stations.cpp:60:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         for (int i = 1; i < c.size() - 1; i++)
      |                         ~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 521 ms 652 KB Output is correct
2 Correct 493 ms 680 KB Output is correct
3 Correct 784 ms 420 KB Output is correct
4 Correct 685 ms 420 KB Output is correct
5 Correct 601 ms 508 KB Output is correct
6 Correct 483 ms 640 KB Output is correct
7 Correct 376 ms 504 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 2 ms 500 KB Output is correct
10 Correct 0 ms 500 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 411 ms 620 KB Output is correct
2 Correct 613 ms 596 KB Output is correct
3 Correct 1059 ms 416 KB Output is correct
4 Correct 573 ms 504 KB Output is correct
5 Correct 464 ms 492 KB Output is correct
6 Correct 479 ms 536 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 538 ms 632 KB Output is correct
2 Correct 478 ms 672 KB Output is correct
3 Correct 993 ms 504 KB Output is correct
4 Correct 601 ms 420 KB Output is correct
5 Correct 627 ms 420 KB Output is correct
6 Correct 572 ms 620 KB Output is correct
7 Correct 503 ms 544 KB Output is correct
8 Correct 3 ms 492 KB Output is correct
9 Correct 4 ms 472 KB Output is correct
10 Correct 2 ms 492 KB Output is correct
11 Correct 658 ms 568 KB Output is correct
12 Correct 445 ms 748 KB Output is correct
13 Correct 491 ms 916 KB Output is correct
14 Correct 429 ms 504 KB Output is correct
15 Correct 56 ms 468 KB Output is correct
16 Correct 51 ms 720 KB Output is correct
17 Correct 116 ms 544 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 904 ms 416 KB Output is correct
2 Correct 658 ms 416 KB Output is correct
3 Correct 522 ms 416 KB Output is correct
4 Correct 3 ms 492 KB Output is correct
5 Correct 4 ms 500 KB Output is correct
6 Correct 1 ms 500 KB Output is correct
7 Correct 554 ms 508 KB Output is correct
8 Correct 828 ms 500 KB Output is correct
9 Correct 619 ms 504 KB Output is correct
10 Correct 600 ms 416 KB Output is correct
11 Correct 6 ms 500 KB Output is correct
12 Correct 5 ms 492 KB Output is correct
13 Correct 3 ms 500 KB Output is correct
14 Correct 4 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 507 ms 508 KB Output is correct
17 Correct 515 ms 500 KB Output is correct
18 Correct 559 ms 416 KB Output is correct
19 Correct 418 ms 508 KB Output is correct
20 Correct 500 ms 504 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 474 ms 656 KB Output is correct
2 Correct 420 ms 616 KB Output is correct
3 Correct 869 ms 444 KB Output is correct
4 Correct 635 ms 508 KB Output is correct
5 Correct 606 ms 504 KB Output is correct
6 Correct 428 ms 548 KB Output is correct
7 Correct 477 ms 544 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 4 ms 544 KB Output is correct
10 Correct 0 ms 504 KB Output is correct
11 Correct 435 ms 688 KB Output is correct
12 Correct 471 ms 544 KB Output is correct
13 Correct 870 ms 420 KB Output is correct
14 Correct 692 ms 508 KB Output is correct
15 Correct 595 ms 416 KB Output is correct
16 Correct 453 ms 508 KB Output is correct
17 Correct 492 ms 416 KB Output is correct
18 Correct 465 ms 740 KB Output is correct
19 Correct 476 ms 708 KB Output is correct
20 Correct 332 ms 500 KB Output is correct
21 Correct 59 ms 436 KB Output is correct
22 Correct 95 ms 564 KB Output is correct
23 Correct 97 ms 620 KB Output is correct
24 Correct 5 ms 504 KB Output is correct
25 Correct 3 ms 492 KB Output is correct
26 Correct 7 ms 472 KB Output is correct
27 Correct 5 ms 492 KB Output is correct
28 Correct 2 ms 492 KB Output is correct
29 Correct 642 ms 416 KB Output is correct
30 Correct 675 ms 500 KB Output is correct
31 Correct 679 ms 552 KB Output is correct
32 Correct 631 ms 420 KB Output is correct
33 Correct 535 ms 416 KB Output is correct
34 Correct 301 ms 628 KB Output is correct
35 Correct 540 ms 812 KB Output is correct
36 Correct 427 ms 788 KB Output is correct
37 Correct 413 ms 628 KB Output is correct
38 Correct 437 ms 704 KB Output is correct
39 Correct 451 ms 752 KB Output is correct
40 Correct 436 ms 720 KB Output is correct
41 Correct 438 ms 840 KB Output is correct
42 Correct 66 ms 720 KB Output is correct
43 Correct 91 ms 572 KB Output is correct
44 Correct 126 ms 716 KB Output is correct
45 Correct 144 ms 592 KB Output is correct
46 Correct 286 ms 504 KB Output is correct
47 Correct 269 ms 544 KB Output is correct
48 Correct 46 ms 600 KB Output is correct
49 Correct 61 ms 664 KB Output is correct