CSES - NOI 2019 Open - Results
Submission details
Task:Distance Code
Sender:pwild
Submission time:2019-03-09 22:56:29 +0200
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED21
#2ACCEPTED47
#3ACCEPTED32
Test results
testverdicttimegroup
#1ACCEPTED0.02 s1, 2, 3details
#2ACCEPTED0.01 s1, 2, 3details
#3ACCEPTED0.01 s1, 2, 3details
#4ACCEPTED0.02 s1, 2, 3details
#5ACCEPTED0.03 s1, 2, 3details
#6ACCEPTED0.02 s1, 2, 3details
#7ACCEPTED0.01 s1, 2, 3details
#8ACCEPTED0.03 s1, 2, 3details
#9ACCEPTED0.02 s1, 2, 3details
#10ACCEPTED0.02 s1, 2, 3details
#11ACCEPTED0.02 s1, 2, 3details
#12ACCEPTED0.02 s2, 3details
#13ACCEPTED0.03 s2, 3details
#14ACCEPTED0.03 s2, 3details
#15ACCEPTED0.03 s2, 3details
#16ACCEPTED0.12 s3details
#17ACCEPTED0.13 s3details
#18ACCEPTED0.14 s3details
#19ACCEPTED0.13 s3details
#20ACCEPTED0.01 s1, 2, 3details

Code

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef pair<ll,ll> pll;
typedef vector<bool> vb;
const ll oo = 0x3f3f3f3f3f3f3f3f;
const double eps = 1e-9;
#define sz(c) ll((c).size())
#define all(c) begin(c), end(c)
#define FOR(i,a,b) for (ll i = (a); i < (b); i++)
#define FORD(i,a,b) for (ll i = (b)-1; i >= (a); i--)
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define eb emplace_back
#define xx first
#define yy second
#define has(c,i) ((c).find(i) != end(c))
#define TR(X) ({ if(1) cerr << "TR: " << (#X) << " = " << (X) << endl; })

void dfs(ll i, ll p, vvl &adj) {
	for (ll j: adj[i]) {
		if (j == p) continue;
		dfs(j,i,adj);
	}
	cout << i+1 << " ";
}

void encoder() {
	ll n; cin >> n;
	vvl adj(n);
	FOR(i,1,n) {
		ll a, b;
		cin >> a >> b;
		a--, b--;
		adj[a].pb(b);
		adj[b].pb(a);
	}
	dfs(0,-1,adj);
	cout << endl;
}

void decoder() {
	ll n; cin >> n;
	vl dist(n-1);
	FOR(i,0,n-1) cin >> dist[i];

	vl p(n,-1);
	FORD(i,0,n-1) {
		ll j = i+1;
		while (dist[i]-- > 1) j = p[j];
		p[i] = j;
		cout << i+1 << " " << j+1 << endl;
	}
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	
	ll mode; cin >> mode;
	if (mode == 1) encoder();
	else decoder();
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
2
2 1

correct output
(empty)

user output
1 2

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
3
3 1
2 1

correct output
(empty)

user output
2 3
1 3

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
4
3 2
2 1
4 1

correct output
(empty)

user output
3 4
2 4
1 2

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
4
2 3
3 4
1 3

correct output
(empty)

user output
3 4
2 3
1 3

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
5
3 5
4 1
1 3
...

correct output
(empty)

user output
4 5
3 4
2 5
1 2

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
5
3 2
3 4
5 1
...

correct output
(empty)

user output
4 5
3 4
2 4
1 5

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
5
4 3
1 4
4 2
...

correct output
(empty)

user output
4 5
3 4
2 4
1 4

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
9 3
8 9
2 9
...

correct output
(empty)

user output
9 10
8 9
7 9
6 9
5 9
...

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
9 2
5 8
7 1
...

correct output
(empty)

user output
9 10
8 9
7 8
6 10
5 6
...

Test 10

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
10 4
9 1
4 7
...

correct output
(empty)

user output
9 10
8 9
7 8
6 7
5 6
...

Test 11

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
2 6
4 3
3 5
...

correct output
(empty)

user output
9 10
8 9
7 9
6 7
5 10
...

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
1
500
10 6
6 255
6 428
...

correct output
(empty)

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

Test 13

Group: 2, 3

Verdict: ACCEPTED

input
1
500
152 466
451 313
158 479
...

correct output
(empty)

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

Test 14

Group: 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

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

Test 15

Group: 2, 3

Verdict: ACCEPTED

input
1
500
144 373
257 233
341 318
...

correct output
(empty)

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

Test 16

Group: 3

Verdict: ACCEPTED

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

correct output
(empty)

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

Test 17

Group: 3

Verdict: ACCEPTED

input
1
100000
88863 19059
86423 76688
98536 95984
...

correct output
(empty)

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

Test 18

Group: 3

Verdict: ACCEPTED

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

correct output
(empty)

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

Test 19

Group: 3

Verdict: ACCEPTED

input
1
100000
58761 66001
25102 51081
98625 67861
...

correct output
(empty)

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

Test 20

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
6
2 1
3 2
4 2
...

correct output
(empty)

user output
5 6
4 5
3 5
2 3
1 3