oj.uz

Submission #750734

# Submission time Handle Problem Language Result Execution time Memory
750734 2023-05-30T08:37:52 Z Error42 Stations (IOI20_stations) C++17
100 / 100
 942 ms 920 KB 
#include "stations.h"

#include <algorithm>
#include <vector>

using namespace std;

int dfs(
	vector<vector<int>> const& graph,
	vector<int>& label,
	int const cur,
	int start,
	bool const left,
	int const par
) {
	int sz = 1;

	if (left) {
		label[cur] = start;
		start++;
	}

	for (int const neigh : graph[cur]) {
		if (neigh == par)
			continue;

		int const neigh_sz = dfs(graph, label, neigh, start, !left, cur);

		sz += neigh_sz;
		start += neigh_sz;
	}

	if (!left)
		label[cur] = start;
	
	return sz;
}

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

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

	vector<int> label(n, -1);

	dfs(graph, label, 0, 0, true, -1);

	return label;
}

int find_next_station(int const s, int const t, vector<int> c) {
	bool const left = s < c[0];

	if (left) {
		if (t < s)
			return c.back();

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

		if (t > s)
			return c.back();

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

		return c.back();
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:61:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |   for (int i = 0; i < c.size() - 1; i++)
      |                   ~~^~~~~~~~~~~~~~
stations.cpp:73:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |   for (int i = 0; i < c.size() - 1; i++)
      |                   ~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 492 ms 648 KB Output is correct
2 Correct 422 ms 616 KB Output is correct
3 Correct 874 ms 484 KB Output is correct
4 Correct 691 ms 492 KB Output is correct
5 Correct 560 ms 496 KB Output is correct
6 Correct 364 ms 616 KB Output is correct
7 Correct 510 ms 544 KB Output is correct
8 Correct 1 ms 488 KB Output is correct
9 Correct 4 ms 492 KB Output is correct
10 Correct 0 ms 492 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 445 ms 544 KB Output is correct
2 Correct 549 ms 604 KB Output is correct
3 Correct 942 ms 472 KB Output is correct
4 Correct 626 ms 544 KB Output is correct
5 Correct 681 ms 420 KB Output is correct
6 Correct 467 ms 496 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 554 ms 620 KB Output is correct
2 Correct 476 ms 548 KB Output is correct
3 Correct 894 ms 416 KB Output is correct
4 Correct 659 ms 496 KB Output is correct
5 Correct 552 ms 416 KB Output is correct
6 Correct 496 ms 540 KB Output is correct
7 Correct 490 ms 544 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 3 ms 488 KB Output is correct
10 Correct 2 ms 500 KB Output is correct
11 Correct 716 ms 496 KB Output is correct
12 Correct 561 ms 684 KB Output is correct
13 Correct 458 ms 712 KB Output is correct
14 Correct 422 ms 492 KB Output is correct
15 Correct 52 ms 420 KB Output is correct
16 Correct 73 ms 544 KB Output is correct
17 Correct 79 ms 604 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 894 ms 472 KB Output is correct
2 Correct 740 ms 416 KB Output is correct
3 Correct 675 ms 416 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 3 ms 492 KB Output is correct
6 Correct 0 ms 492 KB Output is correct
7 Correct 505 ms 492 KB Output is correct
8 Correct 812 ms 492 KB Output is correct
9 Correct 780 ms 420 KB Output is correct
10 Correct 580 ms 492 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 3 ms 492 KB Output is correct
13 Correct 5 ms 492 KB Output is correct
14 Correct 4 ms 500 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 495 ms 416 KB Output is correct
17 Correct 447 ms 416 KB Output is correct
18 Correct 546 ms 416 KB Output is correct
19 Correct 456 ms 416 KB Output is correct
20 Correct 518 ms 548 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 471 ms 620 KB Output is correct
2 Correct 442 ms 544 KB Output is correct
3 Correct 830 ms 420 KB Output is correct
4 Correct 647 ms 416 KB Output is correct
5 Correct 617 ms 492 KB Output is correct
6 Correct 481 ms 620 KB Output is correct
7 Correct 471 ms 544 KB Output is correct
8 Correct 1 ms 500 KB Output is correct
9 Correct 4 ms 500 KB Output is correct
10 Correct 1 ms 500 KB Output is correct
11 Correct 432 ms 492 KB Output is correct
12 Correct 530 ms 492 KB Output is correct
13 Correct 796 ms 420 KB Output is correct
14 Correct 653 ms 492 KB Output is correct
15 Correct 585 ms 416 KB Output is correct
16 Correct 439 ms 612 KB Output is correct
17 Correct 616 ms 416 KB Output is correct
18 Correct 431 ms 664 KB Output is correct
19 Correct 413 ms 688 KB Output is correct
20 Correct 457 ms 500 KB Output is correct
21 Correct 49 ms 492 KB Output is correct
22 Correct 55 ms 548 KB Output is correct
23 Correct 88 ms 544 KB Output is correct
24 Correct 6 ms 504 KB Output is correct
25 Correct 4 ms 492 KB Output is correct
26 Correct 4 ms 492 KB Output is correct
27 Correct 2 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 439 ms 488 KB Output is correct
30 Correct 388 ms 420 KB Output is correct
31 Correct 415 ms 496 KB Output is correct
32 Correct 568 ms 416 KB Output is correct
33 Correct 441 ms 416 KB Output is correct
34 Correct 273 ms 548 KB Output is correct
35 Correct 361 ms 676 KB Output is correct
36 Correct 386 ms 612 KB Output is correct
37 Correct 423 ms 496 KB Output is correct
38 Correct 487 ms 664 KB Output is correct
39 Correct 446 ms 592 KB Output is correct
40 Correct 412 ms 664 KB Output is correct
41 Correct 387 ms 920 KB Output is correct
42 Correct 73 ms 548 KB Output is correct
43 Correct 115 ms 544 KB Output is correct
44 Correct 114 ms 548 KB Output is correct
45 Correct 140 ms 572 KB Output is correct
46 Correct 254 ms 544 KB Output is correct
47 Correct 237 ms 488 KB Output is correct
48 Correct 53 ms 572 KB Output is correct
49 Correct 54 ms 488 KB Output is correct