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Submission #474454

# Submission time Handle Problem Language Result Execution time Memory
474454 2021-09-18T09:30:47 Z cs71107 Stations (IOI20_stations) C++14
100 / 100
 1297 ms 768 KB 
#include "stations.h"

#include <bits/stdc++.h>

using namespace std;

const int MAXM = 1e3+10;

vector<vector<int> > graph;

int depth[MAXM];
int val[MAXM];

int seq = 0;

void dfs(int here,int p){

	int there;

	if(!(depth[here]&1)){
		val[here] = seq;
		seq++;
	}


	for(int i=0;i<(int)graph[here].size();i++){
		there = graph[here][i];
		if(there==p)continue;
		depth[there] = depth[here]^1;
		dfs(there,here);
	}

	if(depth[here]&1){
		val[here] = seq;
		seq++;
	}

	return;
}


std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {

	graph = vector<vector<int> > (n);

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

	seq = 0;
	depth[0] = 0;
	dfs(0,-1);

	vector<int> labels(n);

	for(int i=0;i<n;i++){
		labels[i] = val[i];
	}

	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	
	int m = (int)c.size();

	if(m==1)return c[0];

	int idx = -1;
	int pre = 0;
	int nxt = 0;

	if(s<c[0]){
		
		pre = s;

		for(int i=0;i<m-1;i++){
			if(pre+1<=t&&t<=c[i]){
				idx = i;
				break;
			}
			pre = c[i];
		}

		if(idx==-1)idx = m-1;

	}
	else {

		for(int i=1;i<m;i++){
			if(i==m-1)nxt = s;
			else nxt = c[i+1];

			if(c[i]<=t&&t<=nxt-1){
				idx = i;
				break;
			}
		}

		if(idx==-1)idx = 0;
	}
	
	assert(idx!=-1);

	return c[idx];
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 531 ms 608 KB Output is correct
2 Correct 544 ms 656 KB Output is correct
3 Correct 1079 ms 528 KB Output is correct
4 Correct 858 ms 400 KB Output is correct
5 Correct 711 ms 472 KB Output is correct
6 Correct 602 ms 616 KB Output is correct
7 Correct 633 ms 480 KB Output is correct
8 Correct 3 ms 464 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 625 ms 532 KB Output is correct
2 Correct 556 ms 484 KB Output is correct
3 Correct 1105 ms 452 KB Output is correct
4 Correct 778 ms 488 KB Output is correct
5 Correct 697 ms 400 KB Output is correct
6 Correct 704 ms 484 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 706 ms 656 KB Output is correct
2 Correct 739 ms 672 KB Output is correct
3 Correct 1097 ms 476 KB Output is correct
4 Correct 1011 ms 492 KB Output is correct
5 Correct 775 ms 400 KB Output is correct
6 Correct 495 ms 612 KB Output is correct
7 Correct 438 ms 616 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 4 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 841 ms 400 KB Output is correct
12 Correct 499 ms 696 KB Output is correct
13 Correct 453 ms 608 KB Output is correct
14 Correct 601 ms 496 KB Output is correct
15 Correct 44 ms 400 KB Output is correct
16 Correct 90 ms 540 KB Output is correct
17 Correct 86 ms 528 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1214 ms 400 KB Output is correct
2 Correct 662 ms 400 KB Output is correct
3 Correct 584 ms 496 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 5 ms 464 KB Output is correct
6 Correct 1 ms 472 KB Output is correct
7 Correct 795 ms 408 KB Output is correct
8 Correct 1297 ms 400 KB Output is correct
9 Correct 738 ms 400 KB Output is correct
10 Correct 513 ms 400 KB Output is correct
11 Correct 6 ms 468 KB Output is correct
12 Correct 7 ms 480 KB Output is correct
13 Correct 5 ms 468 KB Output is correct
14 Correct 4 ms 476 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 492 ms 488 KB Output is correct
17 Correct 455 ms 400 KB Output is correct
18 Correct 461 ms 496 KB Output is correct
19 Correct 755 ms 400 KB Output is correct
20 Correct 545 ms 492 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 687 ms 628 KB Output is correct
2 Correct 546 ms 612 KB Output is correct
3 Correct 978 ms 400 KB Output is correct
4 Correct 640 ms 496 KB Output is correct
5 Correct 862 ms 400 KB Output is correct
6 Correct 640 ms 620 KB Output is correct
7 Correct 629 ms 520 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 5 ms 476 KB Output is correct
10 Correct 2 ms 448 KB Output is correct
11 Correct 572 ms 600 KB Output is correct
12 Correct 497 ms 492 KB Output is correct
13 Correct 1117 ms 400 KB Output is correct
14 Correct 829 ms 488 KB Output is correct
15 Correct 560 ms 492 KB Output is correct
16 Correct 662 ms 492 KB Output is correct
17 Correct 590 ms 488 KB Output is correct
18 Correct 402 ms 732 KB Output is correct
19 Correct 369 ms 692 KB Output is correct
20 Correct 583 ms 492 KB Output is correct
21 Correct 58 ms 404 KB Output is correct
22 Correct 84 ms 528 KB Output is correct
23 Correct 109 ms 528 KB Output is correct
24 Correct 7 ms 476 KB Output is correct
25 Correct 5 ms 448 KB Output is correct
26 Correct 6 ms 468 KB Output is correct
27 Correct 5 ms 464 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 395 ms 400 KB Output is correct
30 Correct 490 ms 492 KB Output is correct
31 Correct 656 ms 400 KB Output is correct
32 Correct 572 ms 488 KB Output is correct
33 Correct 500 ms 400 KB Output is correct
34 Correct 419 ms 648 KB Output is correct
35 Correct 614 ms 612 KB Output is correct
36 Correct 573 ms 684 KB Output is correct
37 Correct 580 ms 600 KB Output is correct
38 Correct 568 ms 620 KB Output is correct
39 Correct 606 ms 684 KB Output is correct
40 Correct 605 ms 656 KB Output is correct
41 Correct 460 ms 620 KB Output is correct
42 Correct 67 ms 528 KB Output is correct
43 Correct 139 ms 528 KB Output is correct
44 Correct 162 ms 528 KB Output is correct
45 Correct 199 ms 624 KB Output is correct
46 Correct 417 ms 492 KB Output is correct
47 Correct 475 ms 612 KB Output is correct
48 Correct 86 ms 648 KB Output is correct
49 Correct 66 ms 768 KB Output is correct