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Submission #711981

# Submission time Handle Problem Language Result Execution time Memory
711981 2023-03-17T20:01:46 Z boris_mihov Stations (IOI20_stations) C++17
100 / 100
 995 ms 796 KB 
#include "stations.h"
#include <algorithm>
#include <iostream>
#include <cassert>
#include <numeric>
#include <vector>

typedef long long llong;
const int MAXN = 1000 + 10;

int n;
int timer;
int in[MAXN];
int out[MAXN];
bool which[MAXN];
std::vector <int> g[MAXN];

void dfs(int node, int p)
{
    in[node] = timer++;
    for (const int &i : g[node])
    {
        if (i == p) continue;
        which[i] = 1 ^ which[node];
        dfs(i, node);
    }

    out[node] = timer++;
}

std::vector <int> label(int _n, int k, std::vector <int> u, std::vector <int> v) 
{
    n = _n;
    std::fill(which, which + n, 0);
    for (int i = 0 ; i < n ; ++i)
    {
        g[i].clear();
    }

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

    timer = 0;
    dfs(0, -1);
	std::vector <int> labels(n);
    std::vector <std::pair <int,int>> compr;
	for (int i = 0 ; i < n ; ++i) 
    {
		labels[i] = (which[i] ? in[i] : out[i]);
        compr.push_back({labels[i], i});
    }

    std::sort(compr.begin(), compr.end());
    for (int i = 0 ; i < n ; ++i)
    {
        labels[compr[i].second] = i;
    }

	return labels;
}

int find_next_station(int s, int t, std::vector <int> c) 
{
	std::sort(c.begin(), c.end());
    if (s < c[0]) // in time
    {
        if (t < s)
        {
            return c.back();
        }

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

        return c.back();
    } else
    {
        if (t > s)
        {
            return c[0];
        }

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

        return c[0];
    }

    std::cout << "WTF\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 550 ms 672 KB Output is correct
2 Correct 480 ms 676 KB Output is correct
3 Correct 855 ms 512 KB Output is correct
4 Correct 627 ms 508 KB Output is correct
5 Correct 558 ms 544 KB Output is correct
6 Correct 452 ms 544 KB Output is correct
7 Correct 420 ms 548 KB Output is correct
8 Correct 2 ms 620 KB Output is correct
9 Correct 5 ms 492 KB Output is correct
10 Correct 0 ms 620 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 454 ms 548 KB Output is correct
2 Correct 536 ms 524 KB Output is correct
3 Correct 773 ms 420 KB Output is correct
4 Correct 565 ms 520 KB Output is correct
5 Correct 588 ms 416 KB Output is correct
6 Correct 446 ms 528 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 548 ms 544 KB Output is correct
2 Correct 412 ms 648 KB Output is correct
3 Correct 813 ms 528 KB Output is correct
4 Correct 567 ms 532 KB Output is correct
5 Correct 614 ms 532 KB Output is correct
6 Correct 490 ms 548 KB Output is correct
7 Correct 428 ms 548 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 4 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 455 ms 420 KB Output is correct
12 Correct 375 ms 796 KB Output is correct
13 Correct 437 ms 764 KB Output is correct
14 Correct 397 ms 544 KB Output is correct
15 Correct 48 ms 548 KB Output is correct
16 Correct 62 ms 572 KB Output is correct
17 Correct 114 ms 548 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 872 ms 416 KB Output is correct
2 Correct 606 ms 532 KB Output is correct
3 Correct 669 ms 420 KB Output is correct
4 Correct 3 ms 488 KB Output is correct
5 Correct 4 ms 472 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 740 ms 416 KB Output is correct
8 Correct 995 ms 416 KB Output is correct
9 Correct 782 ms 516 KB Output is correct
10 Correct 699 ms 532 KB Output is correct
11 Correct 5 ms 492 KB Output is correct
12 Correct 6 ms 492 KB Output is correct
13 Correct 5 ms 492 KB Output is correct
14 Correct 5 ms 624 KB Output is correct
15 Correct 2 ms 492 KB Output is correct
16 Correct 530 ms 420 KB Output is correct
17 Correct 641 ms 532 KB Output is correct
18 Correct 651 ms 532 KB Output is correct
19 Correct 578 ms 524 KB Output is correct
20 Correct 464 ms 516 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 611 ms 652 KB Output is correct
2 Correct 501 ms 544 KB Output is correct
3 Correct 802 ms 524 KB Output is correct
4 Correct 712 ms 520 KB Output is correct
5 Correct 630 ms 528 KB Output is correct
6 Correct 448 ms 544 KB Output is correct
7 Correct 485 ms 508 KB Output is correct
8 Correct 3 ms 620 KB Output is correct
9 Correct 5 ms 492 KB Output is correct
10 Correct 2 ms 464 KB Output is correct
11 Correct 443 ms 548 KB Output is correct
12 Correct 641 ms 548 KB Output is correct
13 Correct 948 ms 516 KB Output is correct
14 Correct 703 ms 420 KB Output is correct
15 Correct 460 ms 420 KB Output is correct
16 Correct 382 ms 548 KB Output is correct
17 Correct 524 ms 416 KB Output is correct
18 Correct 429 ms 656 KB Output is correct
19 Correct 436 ms 780 KB Output is correct
20 Correct 482 ms 544 KB Output is correct
21 Correct 50 ms 544 KB Output is correct
22 Correct 63 ms 724 KB Output is correct
23 Correct 109 ms 672 KB Output is correct
24 Correct 5 ms 512 KB Output is correct
25 Correct 4 ms 504 KB Output is correct
26 Correct 3 ms 500 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 2 ms 492 KB Output is correct
29 Correct 447 ms 524 KB Output is correct
30 Correct 531 ms 548 KB Output is correct
31 Correct 522 ms 420 KB Output is correct
32 Correct 636 ms 416 KB Output is correct
33 Correct 413 ms 416 KB Output is correct
34 Correct 318 ms 644 KB Output is correct
35 Correct 425 ms 724 KB Output is correct
36 Correct 483 ms 784 KB Output is correct
37 Correct 440 ms 528 KB Output is correct
38 Correct 479 ms 728 KB Output is correct
39 Correct 465 ms 656 KB Output is correct
40 Correct 457 ms 784 KB Output is correct
41 Correct 482 ms 776 KB Output is correct
42 Correct 74 ms 740 KB Output is correct
43 Correct 109 ms 672 KB Output is correct
44 Correct 125 ms 632 KB Output is correct
45 Correct 192 ms 544 KB Output is correct
46 Correct 300 ms 612 KB Output is correct
47 Correct 297 ms 536 KB Output is correct
48 Correct 68 ms 700 KB Output is correct
49 Correct 64 ms 728 KB Output is correct