oj.uz

Submission #399071

# Submission time Handle Problem Language Result Execution time Memory
399071 2021-05-05T08:48:37 Z Antekb Stations (IOI20_stations) C++14
100 / 100
 1204 ms 792 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
const int N=1005;
int pre[N], post[N], d[N];
vector<int> E[N];
int wsk=1;
void dfs(int v, int p){
	//cout<<v<<" "<<p<<" "<<wsk<<endl;
	pre[v]=wsk++;
	for(int u:E[v]){
		if(u!=p){
			assert(pre[u]==0);
			d[u]=d[v]+1;
			dfs(u, v);
		}
	}
	post[v]=wsk++;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	for(int i=0; i<n; i++){
		pre[i]=post[i]=d[i]=0;
		E[i].clear();
	}
	for(int i=0; i<n-1; i++){
		E[u[i]].push_back(v[i]);
		E[v[i]].push_back(u[i]);
	}
	std::vector<int> labels(n);
	wsk=1;
	d[0]=0;
	dfs(0, -1);
	vector<pair<int, int > > V(n);
	for (int i = 0; i < n; i++) {
		if(d[i]&1)V[i] = {pre[i], i};
		else V[i]={post[i], i};
		//cout<<i<<" "<<labels[i]<<"\n";
	}
	sort(V.begin(), V.end());
	for(int i=0; i<n; i++){
		labels[V[i].second]=i;
	}
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	sort(c.begin(), c.end());
	bool ma=1;
	for(int i:c){
		if(i>s)ma=0;
	}
	if(ma){
		if(t>=s)return c[0];
		for(int i=c.size()-1; i>=0; i--){
			if(c[i]<=t)return c[i];
		}
		return c[0];
	}
	else{
		//reverse(c.begin(), c.end());
		if(t<s)return c.back();
		for(int i=0; i<c.size(); i++){
			if(c[i]>=t)return c[i];
		}
		return c.back();
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:62:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |   for(int i=0; i<c.size(); i++){
      |                ~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 720 ms 656 KB Output is correct
2 Correct 503 ms 656 KB Output is correct
3 Correct 1035 ms 492 KB Output is correct
4 Correct 691 ms 400 KB Output is correct
5 Correct 529 ms 528 KB Output is correct
6 Correct 571 ms 624 KB Output is correct
7 Correct 613 ms 528 KB Output is correct
8 Correct 3 ms 476 KB Output is correct
9 Correct 5 ms 728 KB Output is correct
10 Correct 2 ms 600 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 604 ms 528 KB Output is correct
2 Correct 692 ms 524 KB Output is correct
3 Correct 985 ms 508 KB Output is correct
4 Correct 916 ms 492 KB Output is correct
5 Correct 668 ms 528 KB Output is correct
6 Correct 493 ms 656 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 601 ms 648 KB Output is correct
2 Correct 650 ms 788 KB Output is correct
3 Correct 1178 ms 528 KB Output is correct
4 Correct 775 ms 588 KB Output is correct
5 Correct 763 ms 644 KB Output is correct
6 Correct 514 ms 636 KB Output is correct
7 Correct 506 ms 648 KB Output is correct
8 Correct 3 ms 728 KB Output is correct
9 Correct 6 ms 604 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 797 ms 528 KB Output is correct
12 Correct 561 ms 772 KB Output is correct
13 Correct 540 ms 528 KB Output is correct
14 Correct 564 ms 656 KB Output is correct
15 Correct 69 ms 724 KB Output is correct
16 Correct 88 ms 656 KB Output is correct
17 Correct 142 ms 656 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 884 ms 528 KB Output is correct
2 Correct 709 ms 520 KB Output is correct
3 Correct 826 ms 648 KB Output is correct
4 Correct 3 ms 600 KB Output is correct
5 Correct 5 ms 596 KB Output is correct
6 Correct 2 ms 608 KB Output is correct
7 Correct 765 ms 508 KB Output is correct
8 Correct 867 ms 512 KB Output is correct
9 Correct 754 ms 528 KB Output is correct
10 Correct 771 ms 656 KB Output is correct
11 Correct 6 ms 600 KB Output is correct
12 Correct 8 ms 600 KB Output is correct
13 Correct 6 ms 728 KB Output is correct
14 Correct 4 ms 728 KB Output is correct
15 Correct 2 ms 600 KB Output is correct
16 Correct 683 ms 512 KB Output is correct
17 Correct 643 ms 528 KB Output is correct
18 Correct 534 ms 512 KB Output is correct
19 Correct 669 ms 656 KB Output is correct
20 Correct 692 ms 540 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 585 ms 632 KB Output is correct
2 Correct 506 ms 528 KB Output is correct
3 Correct 1204 ms 528 KB Output is correct
4 Correct 847 ms 528 KB Output is correct
5 Correct 606 ms 528 KB Output is correct
6 Correct 434 ms 520 KB Output is correct
7 Correct 468 ms 656 KB Output is correct
8 Correct 5 ms 600 KB Output is correct
9 Correct 4 ms 600 KB Output is correct
10 Correct 3 ms 616 KB Output is correct
11 Correct 462 ms 528 KB Output is correct
12 Correct 527 ms 648 KB Output is correct
13 Correct 1022 ms 528 KB Output is correct
14 Correct 801 ms 528 KB Output is correct
15 Correct 569 ms 516 KB Output is correct
16 Correct 584 ms 672 KB Output is correct
17 Correct 675 ms 452 KB Output is correct
18 Correct 566 ms 760 KB Output is correct
19 Correct 499 ms 628 KB Output is correct
20 Correct 614 ms 536 KB Output is correct
21 Correct 73 ms 656 KB Output is correct
22 Correct 94 ms 656 KB Output is correct
23 Correct 148 ms 672 KB Output is correct
24 Correct 5 ms 600 KB Output is correct
25 Correct 6 ms 728 KB Output is correct
26 Correct 6 ms 600 KB Output is correct
27 Correct 5 ms 728 KB Output is correct
28 Correct 2 ms 600 KB Output is correct
29 Correct 635 ms 512 KB Output is correct
30 Correct 625 ms 656 KB Output is correct
31 Correct 517 ms 516 KB Output is correct
32 Correct 535 ms 528 KB Output is correct
33 Correct 478 ms 528 KB Output is correct
34 Correct 308 ms 516 KB Output is correct
35 Correct 533 ms 744 KB Output is correct
36 Correct 515 ms 504 KB Output is correct
37 Correct 487 ms 528 KB Output is correct
38 Correct 597 ms 648 KB Output is correct
39 Correct 526 ms 616 KB Output is correct
40 Correct 618 ms 632 KB Output is correct
41 Correct 585 ms 792 KB Output is correct
42 Correct 71 ms 656 KB Output is correct
43 Correct 110 ms 748 KB Output is correct
44 Correct 128 ms 528 KB Output is correct
45 Correct 161 ms 644 KB Output is correct
46 Correct 319 ms 528 KB Output is correct
47 Correct 291 ms 520 KB Output is correct
48 Correct 70 ms 788 KB Output is correct
49 Correct 69 ms 780 KB Output is correct