CSES - NOI 2019 - Results
Submission details
Task:Distance Code
Sender:Niklas Sandén
Submission time:2019-03-12 21:55:27 +0200
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED21
#2ACCEPTED47
#3ACCEPTED32
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#2ACCEPTED0.02 s1, 2, 3details
#3ACCEPTED0.02 s1, 2, 3details
#4ACCEPTED0.02 s1, 2, 3details
#5ACCEPTED0.02 s1, 2, 3details
#6ACCEPTED0.03 s1, 2, 3details
#7ACCEPTED0.02 s1, 2, 3details
#8ACCEPTED0.01 s1, 2, 3details
#9ACCEPTED0.02 s1, 2, 3details
#10ACCEPTED0.02 s1, 2, 3details
#11ACCEPTED0.01 s1, 2, 3details
#12ACCEPTED0.02 s2, 3details
#13ACCEPTED0.03 s2, 3details
#14ACCEPTED0.02 s2, 3details
#15ACCEPTED0.02 s2, 3details
#16ACCEPTED0.05 s3details
#17ACCEPTED0.06 s3details
#18ACCEPTED0.05 s3details
#19ACCEPTED0.05 s3details
#20ACCEPTED0.02 s1, 2, 3details

Code

#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define allP(x) x->begin(), x->end()
#define sz(x) (int)(x).size()
// #define int ll
typedef long long ll;
const int inf = 0x3f3f3f3f;
const long long mod = 1000000007;
void Recursive(const vector<vector<int>>& paths, int index, vector<bool>& hasVisited)
{
for (auto& path : paths[index])
{
if (hasVisited[path])
{
continue;
}
hasVisited[path] = true;
Recursive(paths, path, hasVisited);
}
cout << index + 1 << ' ';
}
void Encoder()
{
int n; cin >> n;
vector<vector<int>> paths(n);
for (int i = 0; i < n - 1; i++)
{
int a, b; cin >> a >> b;
a--; b--;
paths[a].push_back(b);
paths[b].push_back(a);
}
vector<bool> hasVisited(n, false);
hasVisited[0] = true;
Recursive(paths, 0, hasVisited);
}
void Decoder()
{
int n; cin >> n;
vector<int> distances(n - 1);
for (int i = n - 2; i >= 0; i--)
{
cin >> distances[i];
}
vector<int> parents(n, -1);
for (int i = 0; i < n - 1; i++)
{
int index = i;
for (int j = 0; j < distances[i] - 1; j++)
{
index = parents[index];
}
parents[i + 1] = index;
cout << i + 2 << ' ' << index + 1 << "\n";
}
}
int main()
{
cin.sync_with_stdio(false);
cin.tie(NULL);
// cin.exceptions(cin.failbit);
// cout << setprecision(10);
// cout << fixed;
int t; cin >> t;
if (t == 1)
{
Encoder();
}
else
{
Decoder();
}
return 0;
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
2
2 1

correct output
(empty)

user output
2 1

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
3
3 1
2 1

correct output
(empty)

user output
2 1
3 1

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
4
3 2
2 1
4 1

correct output
(empty)

user output
2 1
3 1
4 3

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
4
2 3
3 4
1 3

correct output
(empty)

user output
2 1
3 2
4 2

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
5
3 5
4 1
1 3
...

correct output
(empty)

user output
2 1
3 2
4 1
5 4

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
5
3 2
3 4
5 1
...

correct output
(empty)

user output
2 1
3 2
4 2
5 1

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
5
4 3
1 4
4 2
...

correct output
(empty)

user output
2 1
3 2
4 2
5 2

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
9 3
8 9
2 9
...

correct output
(empty)

user output
2 1
3 2
4 2
5 2
6 2
...

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
9 2
5 8
7 1
...

correct output
(empty)

user output
2 1
3 2
4 3
5 1
6 5
...

Test 10

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
10 4
9 1
4 7
...

correct output
(empty)

user output
2 1
3 2
4 3
5 4
6 5
...

Test 11

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
10
2 6
4 3
3 5
...

correct output
(empty)

user output
2 1
3 2
4 2
5 4
6 1
...

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
1
500
10 6
6 255
6 428
...

correct output
(empty)

user output
2 1
3 2
4 2
5 2
6 2
...
Truncated

Test 13

Group: 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
2 1
3 2
4 3
5 4
6 5
...
Truncated

Test 14

Group: 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
2 1
3 2
4 3
5 4
6 5
...
Truncated

Test 15

Group: 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
2 1
3 2
4 3
5 4
6 5
...
Truncated

Test 16

Group: 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
2 1
3 2
4 2
5 2
6 2
...
Truncated

Test 17

Group: 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
2 1
3 2
4 3
5 4
6 5
...
Truncated

Test 18

Group: 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
2 1
3 2
4 3
5 4
6 5
...
Truncated

Test 19

Group: 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
2 1
3 2
4 3
5 4
6 5
...
Truncated

Test 20

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
6
2 1
3 2
4 2
...

correct output
(empty)

user output
2 1
3 2
4 2
5 4
6 4