CSES - NOI 2019 Open

CSES - NOI 2019 Open - Results

Submission details
Task:	Distance Code
Sender:	tmk
Submission time:	2019-03-10 10:46:07 +0200
Language:	C++
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	21
#2	ACCEPTED	47
#3	ACCEPTED	32

Test results
test	verdict	time	group
#1	ACCEPTED	0.03 s	1, 2, 3	details
#2	ACCEPTED	0.04 s	1, 2, 3	details
#3	ACCEPTED	0.02 s	1, 2, 3	details
#4	ACCEPTED	0.04 s	1, 2, 3	details
#5	ACCEPTED	0.03 s	1, 2, 3	details
#6	ACCEPTED	0.03 s	1, 2, 3	details
#7	ACCEPTED	0.02 s	1, 2, 3	details
#8	ACCEPTED	0.04 s	1, 2, 3	details
#9	ACCEPTED	0.04 s	1, 2, 3	details
#10	ACCEPTED	0.02 s	1, 2, 3	details
#11	ACCEPTED	0.03 s	1, 2, 3	details
#12	ACCEPTED	0.03 s	2, 3	details
#13	ACCEPTED	0.03 s	2, 3	details
#14	ACCEPTED	0.03 s	2, 3	details
#15	ACCEPTED	0.03 s	2, 3	details
#16	ACCEPTED	0.05 s	3	details
#17	ACCEPTED	0.05 s	3	details
#18	ACCEPTED	0.04 s	3	details
#19	ACCEPTED	0.06 s	3	details
#20	ACCEPTED	0.03 s	1, 2, 3	details

Code

#include<bits/stdc++.h>
using namespace std;
#ifndef d
#define d(...)
#endif
#define st first
#define nd second
#define pb push_back
#define siz(c) (int)(c).size()
#define all(c) (c).begin(), (c).end()
typedef long long LL;
typedef long double LD;
constexpr int INF=1e9+7;
constexpr LL INFL=1e18;
template<class L, class R> ostream &operator<<(ostream &os, pair<L,R> P) {
  return os << "(" << P.st << "," << P.nd << ")";
}
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template <typename T>
using ordered_set =
    tree<T, null_type, less<T>, rb_tree_tag,
         tree_order_statistics_node_update>;
*/

constexpr int maxn = 100005;

int n;
vector<int> G[maxn], preord;

void dfs(int a, int par=-1) {
	preord.push_back(a);
	for(auto v:G[a])
		if(v != par)
			dfs(v, a);
}

void encode() {
	cin >> n;
	for(int i=0; i<n-1; i++) {
		int a, b;
		cin >> a >> b;
		G[a].pb(b);
		G[b].pb(a);
	}
	
	dfs(1);
	reverse(all(preord));
	for(auto x:preord)
		cout << x << " ";
	cout << "\n";
}

vector<int> buck[3*maxn];
vector<pair<int, int>> edges;

void decode() {
	cin >> n;
	int lst = n;
	int pos = maxn;
	for(int i=1; i<n; i++) {
		int dist;
		cin >> dist;
		if(dist == 1) {
			edges.emplace_back(lst, n-i);
			pos--;
			while(not buck[pos].empty()) {
				auto w = buck[pos].back();
				buck[pos].pop_back();
				edges.emplace_back(n-i, w);
			}
			lst = n-i;
		} else {
			//cerr << "lst () laduje do: " << lst << " -> " << pos << endl;
			buck[--pos].push_back(lst);
			pos += dist - 1;
			lst = n-i;
		}
	}
	
	for(auto& e:edges)
		cout << e.st << " " << e.nd << "\n";
}

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int T; cin >> T;
	if(T == 1) encode();
	else decode();
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 2 2 1` view save

correct output
(empty)

user output
`2 1` view save

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 3 3 1 2 1` view save

correct output
(empty)

user output
`2 1 1 3` view save

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 4 3 2 2 1 4 1` view save

correct output
(empty)

user output
`3 2 2 1 1 4` view save

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 4 2 3 3 4 1 3` view save

correct output
(empty)

user output
`3 2 2 4 2 1` view save

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 5 3 5 4 1 1 3 ...` view save

correct output
(empty)

user output
`5 4 3 2 2 1 1 4` view save

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 5 3 2 3 4 5 1 ...` view save

correct output
(empty)

user output
`4 3 3 5 2 1 1 3` view save

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 5 4 3 1 4 4 2 ...` view save

correct output
(empty)

user output
`3 2 2 4 2 5 2 1` view save

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 10 9 3 8 9 2 9 ...` view save

correct output
(empty)

user output
`3 2 2 4 2 5 2 6 2 7 ...` view save

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 10 9 2 5 8 7 1 ...` view save

correct output
(empty)

user output
`10 9 9 8 7 6 6 5 5 4 ...` view save

Test 10

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 10 10 4 9 1 4 7 ...` view save

correct output
(empty)

user output
`10 9 9 8 8 7 6 5 5 7 ...` view save

Test 11

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 10 2 6 4 3 3 5 ...` view save

correct output
(empty)

user output
`9 8 8 7 7 10 6 5 5 4 ...` view save

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
`1 500 10 6 6 255 6 428 ...` view save

correct output
(empty)

user output
`3 2 2 4 2 5 2 6 2 7 ...` Truncated

Test 13

Group: 2, 3

Verdict: ACCEPTED

input
`1 500 152 466 451 313 158 479 ...` view save

correct output
(empty)

user output
`500 499 499 498 498 497 497 496 496 495 ...` Truncated

Test 14

Group: 2, 3

Verdict: ACCEPTED

input
`1 500 109 440 330 190 443 161 ...` view save

correct output
(empty)

user output
`500 499 499 498 498 497 497 496 492 491 ...` Truncated

Test 15

Group: 2, 3

Verdict: ACCEPTED

input
`1 500 144 373 257 233 341 318 ...` view save

correct output
(empty)

user output
`500 499 499 498 498 497 497 496 496 495 ...` Truncated

Test 16

Group: 3

Verdict: ACCEPTED

input
`1 100000 54983 75172 93807 75172 44082 75172 ...` view save

correct output
(empty)

user output
`3 2 2 4 2 5 2 6 2 7 ...` Truncated

Test 17

Group: 3

Verdict: ACCEPTED

input
`1 100000 88863 19059 86423 76688 98536 95984 ...` view save

correct output
(empty)

user output
`100000 99999 99999 99998 99998 99997 99997 99996 99996 99995 ...` Truncated

Test 18

Group: 3

Verdict: ACCEPTED

input
`1 100000 59979 6389 19097 24999 27846 82330 ...` view save

correct output
(empty)

user output
`100000 99999 99998 99997 99996 99995 99995 99994 99993 99992 ...` Truncated

Test 19

Group: 3

Verdict: ACCEPTED

input
`1 100000 58761 66001 25102 51081 98625 67861 ...` view save

correct output
(empty)

user output
`100000 99999 99999 99998 99998 99997 99997 99996 99996 99995 ...` Truncated

Test 20

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 6 2 1 3 2 4 2 ...` view save

correct output
(empty)

user output
`4 3 3 5 3 2 2 6 2 1` view save

NOI 2019 Open

Distance Code

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Tasks

Submissions (tmk)