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Submission #604995

# Submission time Handle Problem Language Result Execution time Memory
604995 2022-07-25T12:00:37 Z HamletPetrosyan Stations (IOI20_stations) C++17
100 / 100
 907 ms 760 KB 
#include "stations.h"
#include <vector>
#include <iostream>
using namespace std;

#define ll long long
#define add push_back
#define len(a) ((int)(a).size())

vector<int> g[1005];
vector<int> labels;
int timer = 0;

void dfs(int v, int p, bool m){
	if(m == 0) labels[v] = timer++;
	for(int i = 0; i < len(g[v]); i++){
		int to = g[v][i];
		if(to == p) continue;
		dfs(to, v, !m);
	}
	if(m == 1) labels[v] = timer++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	labels.resize(n);
	timer = 0;
	for(int i = 0; i < n; i++) {
		g[i].clear();
	}
	for(int i = 0; i < len(u); i++){
		g[u[i]].add(v[i]);
		g[v[i]].add(u[i]);
	}
	dfs(0, 0, false);

//	for(int i = 0; i < n; i++){
//		cout << labels[i] << " ";
//	}
//	cout << endl;

	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
//	cout << s << " " << t << ": " << "\n";
//	for(int i = 0; i < len(c); i++){
//		cout << c[i] << " ";
//	}
	if(len(c) == 1){
		return c[0];
	}
	int l, r;
	if(s < c[0]){
		l = s;
		r = (s == 0 ? c[len(c) - 1] : c[len(c) - 2]);

		if(!(l <= t && t <= r)){
//			cout << len(c) - 1 << " ___ " << c[len(c) - 1] << endl;
			return c[len(c) - 1];
		}
		int ind = (s == 0 ? len(c) - 1 : len(c) - 2);
		while(ind >= 0 && t <= c[ind]){ ind--; }
//		cout << ind + 1 << " __ " << c[ind + 1] << endl;
		return c[++ind];
	}

	r = s;
	l = c[1];

	if(!(l <= t && t <= r)){
//		cout << 0 << " " << c[0] << endl;
		return c[0];
	}
	int ind = 1;
	while(ind < len(c) && t >= c[ind]) { ind++; }
//	cout << ind - 1 << " _ " << c[ind - 1] << endl;
	return c[--ind];
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 523 ms 544 KB Output is correct
2 Correct 420 ms 536 KB Output is correct
3 Correct 884 ms 528 KB Output is correct
4 Correct 620 ms 416 KB Output is correct
5 Correct 486 ms 524 KB Output is correct
6 Correct 451 ms 660 KB Output is correct
7 Correct 398 ms 544 KB Output is correct
8 Correct 1 ms 500 KB Output is correct
9 Correct 4 ms 496 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 398 ms 528 KB Output is correct
2 Correct 496 ms 548 KB Output is correct
3 Correct 868 ms 528 KB Output is correct
4 Correct 677 ms 416 KB Output is correct
5 Correct 630 ms 420 KB Output is correct
6 Correct 450 ms 532 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 520 ms 672 KB Output is correct
2 Correct 403 ms 652 KB Output is correct
3 Correct 787 ms 420 KB Output is correct
4 Correct 610 ms 564 KB Output is correct
5 Correct 616 ms 528 KB Output is correct
6 Correct 404 ms 656 KB Output is correct
7 Correct 437 ms 548 KB Output is correct
8 Correct 2 ms 488 KB Output is correct
9 Correct 3 ms 560 KB Output is correct
10 Correct 2 ms 492 KB Output is correct
11 Correct 564 ms 416 KB Output is correct
12 Correct 413 ms 672 KB Output is correct
13 Correct 508 ms 756 KB Output is correct
14 Correct 458 ms 548 KB Output is correct
15 Correct 51 ms 420 KB Output is correct
16 Correct 54 ms 576 KB Output is correct
17 Correct 102 ms 544 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 819 ms 528 KB Output is correct
2 Correct 653 ms 416 KB Output is correct
3 Correct 488 ms 524 KB Output is correct
4 Correct 2 ms 492 KB Output is correct
5 Correct 3 ms 492 KB Output is correct
6 Correct 0 ms 500 KB Output is correct
7 Correct 546 ms 588 KB Output is correct
8 Correct 873 ms 440 KB Output is correct
9 Correct 568 ms 420 KB Output is correct
10 Correct 600 ms 528 KB Output is correct
11 Correct 5 ms 496 KB Output is correct
12 Correct 6 ms 492 KB Output is correct
13 Correct 5 ms 500 KB Output is correct
14 Correct 3 ms 492 KB Output is correct
15 Correct 1 ms 500 KB Output is correct
16 Correct 468 ms 536 KB Output is correct
17 Correct 351 ms 528 KB Output is correct
18 Correct 508 ms 420 KB Output is correct
19 Correct 478 ms 420 KB Output is correct
20 Correct 495 ms 416 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 501 ms 688 KB Output is correct
2 Correct 447 ms 676 KB Output is correct
3 Correct 907 ms 420 KB Output is correct
4 Correct 616 ms 532 KB Output is correct
5 Correct 570 ms 528 KB Output is correct
6 Correct 476 ms 656 KB Output is correct
7 Correct 449 ms 540 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 5 ms 492 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 503 ms 524 KB Output is correct
12 Correct 543 ms 544 KB Output is correct
13 Correct 836 ms 416 KB Output is correct
14 Correct 659 ms 420 KB Output is correct
15 Correct 606 ms 416 KB Output is correct
16 Correct 449 ms 524 KB Output is correct
17 Correct 599 ms 544 KB Output is correct
18 Correct 493 ms 652 KB Output is correct
19 Correct 434 ms 760 KB Output is correct
20 Correct 482 ms 532 KB Output is correct
21 Correct 48 ms 444 KB Output is correct
22 Correct 67 ms 572 KB Output is correct
23 Correct 93 ms 672 KB Output is correct
24 Correct 6 ms 500 KB Output is correct
25 Correct 5 ms 492 KB Output is correct
26 Correct 4 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 2 ms 500 KB Output is correct
29 Correct 527 ms 420 KB Output is correct
30 Correct 549 ms 544 KB Output is correct
31 Correct 436 ms 420 KB Output is correct
32 Correct 568 ms 416 KB Output is correct
33 Correct 412 ms 420 KB Output is correct
34 Correct 310 ms 632 KB Output is correct
35 Correct 419 ms 748 KB Output is correct
36 Correct 544 ms 740 KB Output is correct
37 Correct 637 ms 636 KB Output is correct
38 Correct 407 ms 624 KB Output is correct
39 Correct 476 ms 728 KB Output is correct
40 Correct 540 ms 640 KB Output is correct
41 Correct 464 ms 712 KB Output is correct
42 Correct 62 ms 664 KB Output is correct
43 Correct 110 ms 548 KB Output is correct
44 Correct 127 ms 544 KB Output is correct
45 Correct 181 ms 588 KB Output is correct
46 Correct 278 ms 544 KB Output is correct
47 Correct 281 ms 548 KB Output is correct
48 Correct 40 ms 652 KB Output is correct
49 Correct 56 ms 696 KB Output is correct