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Submission #804612

# Submission time Handle Problem Language Result Execution time Memory
804612 2023-08-03T10:25:38 Z LittleCube Stations (IOI20_stations) C++17
100 / 100
 771 ms 808 KB 
#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;

int t, vis[1000];
vector<int> E[1000], labels;

// type 0: first, 1: last
void dfs(int u, int type)
{
	vis[u] = 1;
	if (type == 0)
		labels[u] = t++;
	for (auto v : E[u])
		if (!vis[v])
			dfs(v, type ^ 1);
	if (type == 1)
		labels[u] = t++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v)
{
	t = 0;
	for (int i = 0; i < n; i++)
		E[i].clear(), vis[i] = 0;
	for (int i = 0; i < n - 1; i++)
		E[u[i]].emplace_back(v[i]), E[v[i]].emplace_back(u[i]);
	labels.clear();
	labels.resize(n);
	dfs(0, 0);
	return labels;
}

int find_next_station(int s, int t, vector<int> c)
{
	int root = -1;
	if (s < c[0])
	{
		if (s != 0)
		{
			root = c.back();
			c.pop_back();
		}
		int pre = s;
		for (int a : c)
		{
			if (pre <= t && t <= a)
				return a;
			pre = a + 1;
		}
	}
	else
	{
		reverse(c.begin(), c.end());
		if (s != 0)
		{
			root = c.back();
			c.pop_back();
		}
		int last = s;
		for (int a : c)
		{
			if (a <= t && t <= last)
				return a;
			last = a - 1;
		}
	}
	return root;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 439 ms 660 KB Output is correct
2 Correct 329 ms 744 KB Output is correct
3 Correct 694 ms 416 KB Output is correct
4 Correct 612 ms 416 KB Output is correct
5 Correct 475 ms 420 KB Output is correct
6 Correct 400 ms 720 KB Output is correct
7 Correct 417 ms 528 KB Output is correct
8 Correct 1 ms 500 KB Output is correct
9 Correct 3 ms 508 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 349 ms 516 KB Output is correct
2 Correct 390 ms 548 KB Output is correct
3 Correct 653 ms 420 KB Output is correct
4 Correct 450 ms 528 KB Output is correct
5 Correct 439 ms 420 KB Output is correct
6 Correct 389 ms 528 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 400 ms 668 KB Output is correct
2 Correct 313 ms 612 KB Output is correct
3 Correct 771 ms 416 KB Output is correct
4 Correct 477 ms 524 KB Output is correct
5 Correct 465 ms 528 KB Output is correct
6 Correct 377 ms 636 KB Output is correct
7 Correct 362 ms 536 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 3 ms 492 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 419 ms 420 KB Output is correct
12 Correct 412 ms 772 KB Output is correct
13 Correct 333 ms 716 KB Output is correct
14 Correct 408 ms 532 KB Output is correct
15 Correct 47 ms 620 KB Output is correct
16 Correct 62 ms 708 KB Output is correct
17 Correct 99 ms 548 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 697 ms 420 KB Output is correct
2 Correct 547 ms 420 KB Output is correct
3 Correct 404 ms 532 KB Output is correct
4 Correct 1 ms 496 KB Output is correct
5 Correct 3 ms 496 KB Output is correct
6 Correct 0 ms 492 KB Output is correct
7 Correct 582 ms 420 KB Output is correct
8 Correct 714 ms 416 KB Output is correct
9 Correct 583 ms 528 KB Output is correct
10 Correct 464 ms 420 KB Output is correct
11 Correct 4 ms 496 KB Output is correct
12 Correct 5 ms 492 KB Output is correct
13 Correct 3 ms 492 KB Output is correct
14 Correct 2 ms 488 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 407 ms 416 KB Output is correct
17 Correct 466 ms 544 KB Output is correct
18 Correct 479 ms 416 KB Output is correct
19 Correct 432 ms 532 KB Output is correct
20 Correct 381 ms 524 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 417 ms 548 KB Output is correct
2 Correct 398 ms 532 KB Output is correct
3 Correct 589 ms 528 KB Output is correct
4 Correct 490 ms 420 KB Output is correct
5 Correct 478 ms 416 KB Output is correct
6 Correct 363 ms 548 KB Output is correct
7 Correct 336 ms 548 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 436 ms 524 KB Output is correct
12 Correct 426 ms 564 KB Output is correct
13 Correct 747 ms 416 KB Output is correct
14 Correct 493 ms 416 KB Output is correct
15 Correct 420 ms 420 KB Output is correct
16 Correct 342 ms 528 KB Output is correct
17 Correct 440 ms 660 KB Output is correct
18 Correct 342 ms 656 KB Output is correct
19 Correct 341 ms 644 KB Output is correct
20 Correct 382 ms 528 KB Output is correct
21 Correct 48 ms 492 KB Output is correct
22 Correct 49 ms 572 KB Output is correct
23 Correct 83 ms 748 KB Output is correct
24 Correct 4 ms 492 KB Output is correct
25 Correct 4 ms 492 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 500 KB Output is correct
28 Correct 2 ms 500 KB Output is correct
29 Correct 353 ms 528 KB Output is correct
30 Correct 386 ms 528 KB Output is correct
31 Correct 439 ms 532 KB Output is correct
32 Correct 388 ms 532 KB Output is correct
33 Correct 387 ms 532 KB Output is correct
34 Correct 287 ms 592 KB Output is correct
35 Correct 388 ms 660 KB Output is correct
36 Correct 351 ms 648 KB Output is correct
37 Correct 490 ms 676 KB Output is correct
38 Correct 314 ms 648 KB Output is correct
39 Correct 379 ms 740 KB Output is correct
40 Correct 351 ms 764 KB Output is correct
41 Correct 425 ms 664 KB Output is correct
42 Correct 55 ms 572 KB Output is correct
43 Correct 74 ms 672 KB Output is correct
44 Correct 92 ms 792 KB Output is correct
45 Correct 103 ms 568 KB Output is correct
46 Correct 241 ms 668 KB Output is correct
47 Correct 174 ms 608 KB Output is correct
48 Correct 51 ms 708 KB Output is correct
49 Correct 45 ms 808 KB Output is correct