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Submission #430173

# Submission time Handle Problem Language Result Execution time Memory
430173 2021-06-16T11:52:49 Z alireza_kaviani Stations (IOI20_stations) C++17
100 / 100
 1442 ms 876 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;

#define sep			' '

const int MAXN = 1010;
int timer , ans[MAXN];
vector<int> adj[MAXN];

void DFS(int v , int p = -1 , int h = 0){
	if(h % 2 == 0)	ans[v] = timer++;
	for(int u : adj[v]){
		if(u == p)	continue;
		DFS(u , v , h + 1);
	}
	if(h % 2 == 1)	ans[v] = timer++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector<int> labels(n , 0); timer = 0;
	for (int i = 0; i < n; i++) {
		adj[i].clear(); ans[i] = 0;
	}
	for(int i = 0 ; i < n - 1 ; i++){
		adj[v[i]].push_back(u[i]);
		adj[u[i]].push_back(v[i]);
	}
	DFS(0);
	for(int i = 0 ; i < n ; i++){
		labels[i] = ans[i];
//		cout << i << sep << ans[i] << endl;
	}
	return labels;
}

int SolveSt(int s , int t , vector<int> c){
//	cout << "solveSt " << s << sep << t << sep << c.size() << endl;
	int prv = s;
	for(int u : c){
		if(prv < t && t <= u)	return u;
		prv = u;
	}
	return c.back();
}

int SolveFn(int s , int t , vector<int> c){
//	cout << "SolveFn " << s << sep << t << sep << c.size() << endl;
	int prv = s;
	reverse(c.begin() , c.end());
	for(int u : c){
//		cout << u << endl;
		if(u <= t && t < prv)	return u;
		prv = u;
	}
	return c.back();
}

int find_next_station(int s, int t, vector<int> c) {
//	cout << "query " << s << sep << t << endl;
	if(s < c[0])	return SolveSt(s , t , c);
	if(s > c[0])	return SolveFn(s , t , c);
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type]
   63 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 902 ms 640 KB Output is correct
2 Correct 582 ms 840 KB Output is correct
3 Correct 1273 ms 400 KB Output is correct
4 Correct 789 ms 500 KB Output is correct
5 Correct 996 ms 400 KB Output is correct
6 Correct 734 ms 528 KB Output is correct
7 Correct 533 ms 524 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 6 ms 400 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 738 ms 504 KB Output is correct
2 Correct 669 ms 528 KB Output is correct
3 Correct 1253 ms 400 KB Output is correct
4 Correct 837 ms 516 KB Output is correct
5 Correct 826 ms 508 KB Output is correct
6 Correct 700 ms 528 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 578 ms 528 KB Output is correct
2 Correct 507 ms 512 KB Output is correct
3 Correct 1442 ms 400 KB Output is correct
4 Correct 732 ms 400 KB Output is correct
5 Correct 1031 ms 512 KB Output is correct
6 Correct 601 ms 512 KB Output is correct
7 Correct 694 ms 512 KB Output is correct
8 Correct 3 ms 420 KB Output is correct
9 Correct 6 ms 472 KB Output is correct
10 Correct 2 ms 476 KB Output is correct
11 Correct 719 ms 400 KB Output is correct
12 Correct 851 ms 732 KB Output is correct
13 Correct 544 ms 756 KB Output is correct
14 Correct 685 ms 500 KB Output is correct
15 Correct 62 ms 576 KB Output is correct
16 Correct 97 ms 532 KB Output is correct
17 Correct 170 ms 660 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1428 ms 400 KB Output is correct
2 Correct 807 ms 516 KB Output is correct
3 Correct 822 ms 436 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 7 ms 476 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 841 ms 516 KB Output is correct
8 Correct 1371 ms 400 KB Output is correct
9 Correct 705 ms 588 KB Output is correct
10 Correct 802 ms 520 KB Output is correct
11 Correct 6 ms 672 KB Output is correct
12 Correct 9 ms 432 KB Output is correct
13 Correct 8 ms 468 KB Output is correct
14 Correct 6 ms 480 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 578 ms 456 KB Output is correct
17 Correct 770 ms 400 KB Output is correct
18 Correct 577 ms 640 KB Output is correct
19 Correct 620 ms 508 KB Output is correct
20 Correct 678 ms 400 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 679 ms 528 KB Output is correct
2 Correct 507 ms 500 KB Output is correct
3 Correct 900 ms 400 KB Output is correct
4 Correct 742 ms 400 KB Output is correct
5 Correct 599 ms 512 KB Output is correct
6 Correct 545 ms 656 KB Output is correct
7 Correct 520 ms 516 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 484 ms 516 KB Output is correct
12 Correct 708 ms 528 KB Output is correct
13 Correct 933 ms 400 KB Output is correct
14 Correct 739 ms 400 KB Output is correct
15 Correct 679 ms 548 KB Output is correct
16 Correct 477 ms 528 KB Output is correct
17 Correct 698 ms 636 KB Output is correct
18 Correct 603 ms 636 KB Output is correct
19 Correct 572 ms 876 KB Output is correct
20 Correct 555 ms 508 KB Output is correct
21 Correct 52 ms 528 KB Output is correct
22 Correct 67 ms 528 KB Output is correct
23 Correct 131 ms 756 KB Output is correct
24 Correct 6 ms 468 KB Output is correct
25 Correct 7 ms 468 KB Output is correct
26 Correct 6 ms 476 KB Output is correct
27 Correct 4 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 589 ms 508 KB Output is correct
30 Correct 659 ms 552 KB Output is correct
31 Correct 582 ms 400 KB Output is correct
32 Correct 585 ms 512 KB Output is correct
33 Correct 468 ms 508 KB Output is correct
34 Correct 446 ms 504 KB Output is correct
35 Correct 476 ms 752 KB Output is correct
36 Correct 554 ms 720 KB Output is correct
37 Correct 489 ms 644 KB Output is correct
38 Correct 642 ms 656 KB Output is correct
39 Correct 517 ms 712 KB Output is correct
40 Correct 519 ms 616 KB Output is correct
41 Correct 574 ms 620 KB Output is correct
42 Correct 91 ms 712 KB Output is correct
43 Correct 100 ms 716 KB Output is correct
44 Correct 189 ms 528 KB Output is correct
45 Correct 147 ms 528 KB Output is correct
46 Correct 382 ms 528 KB Output is correct
47 Correct 370 ms 528 KB Output is correct
48 Correct 70 ms 656 KB Output is correct
49 Correct 82 ms 740 KB Output is correct