oj.uz

Submission #431671

# Submission time Handle Problem Language Result Execution time Memory
431671 2021-06-17T14:16:59 Z dreezy Stations (IOI20_stations) C++17
100 / 100
 1009 ms 796 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pb push_back
#define pi pair<int,int>

vector<int> labels;
vector<vector<int>> graph;

vector<pi> ord;
int cnt = 0;
void dfs1(int n,int p, bool first){//calc sizes
	if(first)
		labels[n] = cnt++;
	//ord[n].first = cnt++;
	for(int adj : graph[n])
	{
		if(adj == p) continue;
		dfs1(adj, n, !first);
	}
	if(!first)
	labels[n ] = cnt++;
	//ord[n].second = cnt++;
}



void name_subtree(int n, int p, bool first){
	if(first)
		labels[n] = ord[n].first;
	else
		labels[n] = ord[n].second;
	for(int adj : graph[n]){
		if(adj == p)
		continue;
		name_subtree(adj, n, !first);
	}
}


vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	cnt = 0;
	ord.clear();
	labels.clear();
	graph.clear();
	ord.assign(n, {0,0});
	labels.assign(n, 0);
	graph.assign( n, vector<int>());
	for (int i = 0; i < n - 1; i++) {
		graph[u[i]].pb(v[i]);
		graph[v[i]].pb(u[i]);
	}
	

	dfs1(0,-1, 1);
	int root = 0;
	//for(int i =0; i<n; i++) cout <<i<<": "<< ord[i].first<<", "<<ord[i].second<<endl;
	
	//name_subtree(root, -1, 1);
	//for(int i =0; i<n; i++) cout <<i<<": "<< labels[i]<<endl;
	
	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	if(c.size() == 1) return c[0];
	
	bool isfirst = c[0] > s;

	
	if(isfirst){
		if(t < s) return c[c.size() - 1];
		for(int adj : c){
			if(t <= adj) return adj;
		}
		return c[c.size()-1] ;
	}
	else{
		reverse(c.begin(), c.end());
		if( t > s) return c[c.size()-1];
		for(int adj : c)
			if(t >= adj)
				return adj;
		return c[c.size()-1];
	}
	

}


/************/

Compilation message

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:58:6: warning: unused variable 'root' [-Wunused-variable]
   58 |  int root = 0;
      |      ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 546 ms 616 KB Output is correct
2 Correct 506 ms 664 KB Output is correct
3 Correct 863 ms 524 KB Output is correct
4 Correct 695 ms 468 KB Output is correct
5 Correct 611 ms 400 KB Output is correct
6 Correct 477 ms 612 KB Output is correct
7 Correct 424 ms 612 KB Output is correct
8 Correct 2 ms 540 KB Output is correct
9 Correct 4 ms 464 KB Output is correct
10 Correct 2 ms 488 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 456 ms 608 KB Output is correct
2 Correct 610 ms 520 KB Output is correct
3 Correct 930 ms 508 KB Output is correct
4 Correct 649 ms 468 KB Output is correct
5 Correct 656 ms 472 KB Output is correct
6 Correct 482 ms 492 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 505 ms 644 KB Output is correct
2 Correct 445 ms 652 KB Output is correct
3 Correct 861 ms 488 KB Output is correct
4 Correct 661 ms 492 KB Output is correct
5 Correct 571 ms 484 KB Output is correct
6 Correct 459 ms 612 KB Output is correct
7 Correct 411 ms 528 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 4 ms 468 KB Output is correct
10 Correct 1 ms 472 KB Output is correct
11 Correct 583 ms 400 KB Output is correct
12 Correct 508 ms 696 KB Output is correct
13 Correct 520 ms 796 KB Output is correct
14 Correct 464 ms 496 KB Output is correct
15 Correct 58 ms 420 KB Output is correct
16 Correct 80 ms 552 KB Output is correct
17 Correct 99 ms 644 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 930 ms 472 KB Output is correct
2 Correct 701 ms 404 KB Output is correct
3 Correct 636 ms 400 KB Output is correct
4 Correct 3 ms 584 KB Output is correct
5 Correct 5 ms 468 KB Output is correct
6 Correct 2 ms 540 KB Output is correct
7 Correct 552 ms 400 KB Output is correct
8 Correct 861 ms 464 KB Output is correct
9 Correct 662 ms 472 KB Output is correct
10 Correct 618 ms 400 KB Output is correct
11 Correct 7 ms 540 KB Output is correct
12 Correct 9 ms 468 KB Output is correct
13 Correct 4 ms 468 KB Output is correct
14 Correct 3 ms 468 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 522 ms 400 KB Output is correct
17 Correct 573 ms 400 KB Output is correct
18 Correct 526 ms 484 KB Output is correct
19 Correct 565 ms 488 KB Output is correct
20 Correct 521 ms 472 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 552 ms 680 KB Output is correct
2 Correct 493 ms 604 KB Output is correct
3 Correct 868 ms 468 KB Output is correct
4 Correct 645 ms 488 KB Output is correct
5 Correct 626 ms 488 KB Output is correct
6 Correct 469 ms 632 KB Output is correct
7 Correct 461 ms 616 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 2 ms 420 KB Output is correct
11 Correct 479 ms 556 KB Output is correct
12 Correct 573 ms 484 KB Output is correct
13 Correct 1009 ms 520 KB Output is correct
14 Correct 688 ms 400 KB Output is correct
15 Correct 650 ms 520 KB Output is correct
16 Correct 451 ms 524 KB Output is correct
17 Correct 642 ms 400 KB Output is correct
18 Correct 509 ms 684 KB Output is correct
19 Correct 504 ms 684 KB Output is correct
20 Correct 445 ms 528 KB Output is correct
21 Correct 58 ms 416 KB Output is correct
22 Correct 77 ms 528 KB Output is correct
23 Correct 115 ms 528 KB Output is correct
24 Correct 4 ms 468 KB Output is correct
25 Correct 7 ms 420 KB Output is correct
26 Correct 4 ms 400 KB Output is correct
27 Correct 3 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 593 ms 528 KB Output is correct
30 Correct 560 ms 476 KB Output is correct
31 Correct 526 ms 480 KB Output is correct
32 Correct 598 ms 400 KB Output is correct
33 Correct 507 ms 472 KB Output is correct
34 Correct 328 ms 620 KB Output is correct
35 Correct 456 ms 668 KB Output is correct
36 Correct 449 ms 696 KB Output is correct
37 Correct 479 ms 696 KB Output is correct
38 Correct 521 ms 692 KB Output is correct
39 Correct 443 ms 688 KB Output is correct
40 Correct 455 ms 676 KB Output is correct
41 Correct 466 ms 556 KB Output is correct
42 Correct 65 ms 528 KB Output is correct
43 Correct 114 ms 592 KB Output is correct
44 Correct 153 ms 528 KB Output is correct
45 Correct 171 ms 572 KB Output is correct
46 Correct 342 ms 484 KB Output is correct
47 Correct 316 ms 484 KB Output is correct
48 Correct 64 ms 528 KB Output is correct
49 Correct 69 ms 648 KB Output is correct