oj.uz

Submission #815946

# Submission time Handle Problem Language Result Execution time Memory
815946 2023-08-09T02:49:08 Z math_rabbit_1028 Stations (IOI20_stations) C++14
100 / 100
 725 ms 888 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> adj[1010];
int ch[1010], ord[2020], lt[1010], rt[1010], dep[1010];

int r = -1;
void DFS(int v) {
	if (dep[v] % 2 == 0) {
		ord[++r] = v;
		lt[v] = r;
	}
	for (int i = 0; i < adj[v].size(); i++) {
		int next = adj[v][i];
		if (ch[next]) continue;
		ch[next] = 1;
		dep[next] = dep[v] + 1;
		DFS(next);	
	}
	if (dep[v] % 2 == 1) {
		ord[++r] = v;
		rt[v] = r;
	}
}


vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	for (int i = 0; i < n; i++) adj[i].clear();

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

	for (int i = 0; i < n; i++) ch[i] = 0;
	ch[0] = 1; dep[0] = 0; r = -1;
	DFS(0);

	vector<int> lab(n);
	for (int i = 0; i < n; i++) {
		if (dep[i] % 2 == 0) lab[i] = lt[i];
		else lab[i] = rt[i];
	}

	//for (int i = 0; i < n; i++) cout << lab[i] << " ";
	//cout << "\n";

	return lab;
}

int find_next_station(int s, int t, vector<int> c) {
	if (s < c[0]) {
		for (int i = 0; i < c.size(); i++) {
			int l = ((i == 0) ? s : c[i - 1]), r = c[i];
			if (l < t && t <= r) return c[i];
		}
		return c[c.size() - 1];
	}
	if (s > c[c.size() - 1]) {
		for (int i = c.size() - 1; i >= 0; i--) {
			int l = c[i], r = ((i == c.size() - 1) ? s : c[i + 1]);
			if (l <= t && t < r) return c[i];
		}
		return c[0];
	}
	assert(false);
}

Compilation message

stations.cpp: In function 'void DFS(int)':
stations.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for (int i = 0; i < adj[v].size(); i++) {
      |                  ~~^~~~~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:54:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |   for (int i = 0; i < c.size(); i++) {
      |                   ~~^~~~~~~~~~
stations.cpp:62:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |    int l = c[i], r = ((i == c.size() - 1) ? s : c[i + 1]);
      |                        ~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 447 ms 672 KB Output is correct
2 Correct 331 ms 832 KB Output is correct
3 Correct 620 ms 548 KB Output is correct
4 Correct 518 ms 536 KB Output is correct
5 Correct 435 ms 548 KB Output is correct
6 Correct 357 ms 804 KB Output is correct
7 Correct 286 ms 564 KB Output is correct
8 Correct 1 ms 628 KB Output is correct
9 Correct 2 ms 620 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 373 ms 544 KB Output is correct
2 Correct 373 ms 536 KB Output is correct
3 Correct 630 ms 524 KB Output is correct
4 Correct 464 ms 612 KB Output is correct
5 Correct 454 ms 532 KB Output is correct
6 Correct 330 ms 580 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 429 ms 676 KB Output is correct
2 Correct 393 ms 656 KB Output is correct
3 Correct 649 ms 668 KB Output is correct
4 Correct 658 ms 532 KB Output is correct
5 Correct 422 ms 544 KB Output is correct
6 Correct 377 ms 672 KB Output is correct
7 Correct 304 ms 544 KB Output is correct
8 Correct 1 ms 620 KB Output is correct
9 Correct 5 ms 628 KB Output is correct
10 Correct 0 ms 620 KB Output is correct
11 Correct 420 ms 544 KB Output is correct
12 Correct 373 ms 728 KB Output is correct
13 Correct 318 ms 764 KB Output is correct
14 Correct 274 ms 532 KB Output is correct
15 Correct 44 ms 584 KB Output is correct
16 Correct 48 ms 728 KB Output is correct
17 Correct 60 ms 660 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 606 ms 544 KB Output is correct
2 Correct 467 ms 536 KB Output is correct
3 Correct 513 ms 548 KB Output is correct
4 Correct 1 ms 628 KB Output is correct
5 Correct 3 ms 632 KB Output is correct
6 Correct 0 ms 632 KB Output is correct
7 Correct 564 ms 532 KB Output is correct
8 Correct 677 ms 548 KB Output is correct
9 Correct 485 ms 544 KB Output is correct
10 Correct 427 ms 544 KB Output is correct
11 Correct 3 ms 628 KB Output is correct
12 Correct 4 ms 616 KB Output is correct
13 Correct 1 ms 620 KB Output is correct
14 Correct 2 ms 620 KB Output is correct
15 Correct 1 ms 620 KB Output is correct
16 Correct 352 ms 540 KB Output is correct
17 Correct 321 ms 532 KB Output is correct
18 Correct 394 ms 564 KB Output is correct
19 Correct 286 ms 532 KB Output is correct
20 Correct 288 ms 536 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 340 ms 680 KB Output is correct
2 Correct 407 ms 664 KB Output is correct
3 Correct 597 ms 532 KB Output is correct
4 Correct 513 ms 548 KB Output is correct
5 Correct 430 ms 544 KB Output is correct
6 Correct 405 ms 648 KB Output is correct
7 Correct 310 ms 544 KB Output is correct
8 Correct 1 ms 620 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 0 ms 620 KB Output is correct
11 Correct 391 ms 532 KB Output is correct
12 Correct 384 ms 588 KB Output is correct
13 Correct 725 ms 528 KB Output is correct
14 Correct 584 ms 544 KB Output is correct
15 Correct 411 ms 548 KB Output is correct
16 Correct 429 ms 544 KB Output is correct
17 Correct 509 ms 536 KB Output is correct
18 Correct 350 ms 796 KB Output is correct
19 Correct 315 ms 780 KB Output is correct
20 Correct 306 ms 544 KB Output is correct
21 Correct 32 ms 620 KB Output is correct
22 Correct 42 ms 600 KB Output is correct
23 Correct 79 ms 584 KB Output is correct
24 Correct 3 ms 628 KB Output is correct
25 Correct 5 ms 616 KB Output is correct
26 Correct 3 ms 620 KB Output is correct
27 Correct 3 ms 620 KB Output is correct
28 Correct 0 ms 620 KB Output is correct
29 Correct 514 ms 544 KB Output is correct
30 Correct 377 ms 544 KB Output is correct
31 Correct 437 ms 672 KB Output is correct
32 Correct 405 ms 544 KB Output is correct
33 Correct 470 ms 536 KB Output is correct
34 Correct 270 ms 652 KB Output is correct
35 Correct 314 ms 724 KB Output is correct
36 Correct 376 ms 660 KB Output is correct
37 Correct 323 ms 656 KB Output is correct
38 Correct 341 ms 664 KB Output is correct
39 Correct 403 ms 672 KB Output is correct
40 Correct 404 ms 664 KB Output is correct
41 Correct 454 ms 656 KB Output is correct
42 Correct 48 ms 572 KB Output is correct
43 Correct 94 ms 664 KB Output is correct
44 Correct 95 ms 568 KB Output is correct
45 Correct 124 ms 724 KB Output is correct
46 Correct 313 ms 544 KB Output is correct
47 Correct 310 ms 544 KB Output is correct
48 Correct 76 ms 704 KB Output is correct
49 Correct 41 ms 888 KB Output is correct