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NOI 2019 Open

Distance Code

  • Start: N/A
  • End: N/A
Submission details
Task:Distance Code
Sender:tmk
Submission time:2019-03-10 10:36:48 +0200
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.02 s1, 2, 3details
#20.03 s1, 2, 3details
#30.03 s1, 2, 3details
#40.03 s1, 2, 3details
#50.03 s1, 2, 3details
#60.04 s1, 2, 3details
#70.03 s1, 2, 3details
#80.03 s1, 2, 3details
#90.03 s1, 2, 3details
#100.02 s1, 2, 3details
#110.03 s1, 2, 3details
#120.02 s2, 3details
#130.04 s2, 3details
#140.03 s2, 3details
#150.03 s2, 3details
#160.05 s3details
#170.06 s3details
#180.06 s3details
#190.06 s3details
#200.03 s1, 2, 3details

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 {
			buck[pos].push_back(lst);
			pos += dist - 1;
		}
	}
	
	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:

input
1
3
3 1
2 1
view save

correct output
(empty)

user output
3 1
1 3
view save

Test 3

Group: 1, 2, 3

Verdict:

input
1
4
3 2
2 1
4 1
view save

correct output
(empty)

user output
4 2
2 1
1 4
view save

Test 4

Group: 1, 2, 3

Verdict:

input
1
4
2 3
3 4
1 3
view save

correct output
(empty)

user output
4 2
2 4
2 1
view save

Test 5

Group: 1, 2, 3

Verdict:

input
1
5
3 5
4 1
1 3
...
view save

correct output
(empty)

user output
5 4
4 2
2 1
1 4
view save

Test 6

Group: 1, 2, 3

Verdict:

input
1
5
3 2
3 4
5 1
...
view save

correct output
(empty)

user output
5 3
3 5
3 1
1 3
view save

Test 7

Group: 1, 2, 3

Verdict:

input
1
5
4 3
1 4
4 2
...
view save

correct output
(empty)

user output
5 2
2 5
2 1
1 5
view save

Test 8

Group: 1, 2, 3

Verdict:

input
1
10
9 3
8 9
2 9
...
view save

correct output
(empty)

user output
10 2
2 10
2 1
1 10
view save

Test 9

Group: 1, 2, 3

Verdict:

input
1
10
9 2
5 8
7 1
...
view save

correct output
(empty)

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

Test 10

Group: 1, 2, 3

Verdict:

input
1
10
10 4
9 1
4 7
...
view save

correct output
(empty)

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

Test 11

Group: 1, 2, 3

Verdict:

input
1
10
2 6
4 3
3 5
...
view save

correct output
(empty)

user output
10 8
8 7
7 10
7 5
5 4
...
view save

Test 12

Group: 2, 3

Verdict:

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

correct output
(empty)

user output
500 2
2 500
2 1
1 500
view save

Test 13

Group: 2, 3

Verdict:

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:

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

correct output
(empty)

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

Test 15

Group: 2, 3

Verdict:

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:

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

correct output
(empty)

user output
100000 2
2 100000
2 1
1 100000
view save

Test 17

Group: 3

Verdict:

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:

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

correct output
(empty)

user output
100000 99999
99999 99997
99997 99995
99995 99994
99994 99992
...
Truncated

Test 19

Group: 3

Verdict:

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:

input
1
6
2 1
3 2
4 2
...
view save

correct output
(empty)

user output
6 3
3 6
3 2
2 1
1 6
view save

Tasks

A Distance Code-B Thieves and Prisons-C Graph Ordering-

Submissions (tmk)

0:42:43 1000:33:24 0