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NOI 2019

Distance Code

  • Start: 2019-03-06 11:00:00
  • End: 2019-03-06 16:00:00
Submission details
Task:Distance Code
Sender:Bjarni Thor
Submission time:2019-03-06 12:26:08 +0200
Language:C++
Status:READY
Result:68
Feedback
groupverdictscore
#1ACCEPTED21
#2ACCEPTED47
#30
Test results
testverdicttimegroup
#1ACCEPTED0.02 s1, 2, 3details
#2ACCEPTED0.02 s1, 2, 3details
#3ACCEPTED0.02 s1, 2, 3details
#4ACCEPTED0.03 s1, 2, 3details
#5ACCEPTED0.01 s1, 2, 3details
#6ACCEPTED0.03 s1, 2, 3details
#7ACCEPTED0.02 s1, 2, 3details
#8ACCEPTED0.03 s1, 2, 3details
#9ACCEPTED0.03 s1, 2, 3details
#10ACCEPTED0.02 s1, 2, 3details
#11ACCEPTED0.01 s1, 2, 3details
#12ACCEPTED0.02 s2, 3details
#13ACCEPTED0.02 s2, 3details
#14ACCEPTED0.03 s2, 3details
#15ACCEPTED0.02 s2, 3details
#16--3details
#17--3details
#18--3details
#19--3details
#20ACCEPTED0.01 s1, 2, 3details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:76:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < dis.size(); i++) {
                   ~~^~~~~~~~~~~~

Code

#include <bits/stdc++.h>

using namespace std;

#define rep(i,a,b) for (__typeof(a) i=(a); i<(b); i++)
#define MP make_pair
#define PB push_back
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;
#define INF 1000000000
#define PI 3.14159265359

vi adj[100010];
int vis[100010];
int remd = 0;
int toTravel;

void dfs(int at)
{
	for (auto u : adj[at]) {
		if (!vis[u]) {
			vis[u] = 1;
			dfs(u);
		}
	}
	if (remd != 0) cout << " ";
	cout << at + 1;
	remd++;
}

/*int findDis(int at, int travelled)
{
	vis[at] = true;
	if (toTravel == travelled) return at;
	for (auto u : adj[at]) {
		if (!vis[u]) {
			vis[u] = true;
			return findDis(u, travelled + 1);
		}
	}
	vis[at] = false;
}*/

int main()
{
    ios_base::sync_with_stdio(false);
	int t, n;
	cin >> t >> n;
	for (int i = 0; i < 100010; i++) {
		adj[i].clear();
		vis[i] = 0;
	}
	if (t == 1) {
		for (int i = 0; i < n - 1; i++) {
			int a, b;
			cin >> a >> b;
			a--; b--;
			adj[a].PB(b);
			adj[b].PB(a);
		}
		vis[0] = 1;
		dfs(0);
	}
	if (t == 2) {
		vi dis;
		for (int i = 0; i < n - 1; i++) {
			int a;
			cin >> a;
			dis.PB(a);
		}
		reverse(dis.begin(), dis.end());
		int at = 0;
		int nodes = 0;
		for (int i = 0; i < dis.size(); i++) {
			for (int i = 0; i < n; i++) vis[i] = 0;
			nodes++;
			toTravel = dis[i] - 1;
			queue<int> q;
			q.push(at);
			int toGo;
			while (!q.empty()) {
				int cur = q.front();
				q.pop();
				if (vis[cur] == toTravel) {
					toGo = cur;
					break;
				}
				for (auto u : adj[cur]) {
					if (vis[u] == 0) {
						vis[u] = vis[cur] + 1;
						q.push(u);
					}
				}
			}
			//cout << "at " << at + 1 << " toTravel " << toTravel << " going to " << toGo + 1 << endl;
			//cout << "connecting " << toGo + 1 << " and " << nodes + 1 << endl;

			//int atDis = findDis(at, 0);
			adj[toGo].PB(nodes);
			adj[nodes].PB(toGo);
			cout << toGo + 1 << " " << nodes + 1 << endl;
			at = nodes;
		}
	}

    return 0;
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
2
2 1
view save

correct output
(empty)

user output
1 2
view save

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
3
3 1
2 1
view save

correct output
(empty)

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

Test 13

Group: 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

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

Test 14

Group: 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

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

Test 15

Group: 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

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

Test 16

Group: 3

Verdict:

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

correct output
(empty)

user output
(empty)

Test 17

Group: 3

Verdict:

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

correct output
(empty)

user output
(empty)

Test 18

Group: 3

Verdict:

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

correct output
(empty)

user output
(empty)

Test 19

Group: 3

Verdict:

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

correct output
(empty)

user output
(empty)

Test 20

Group: 1, 2, 3

Verdict: ACCEPTED

input
1
6
2 1
3 2
4 2
...
view save

correct output
(empty)

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

Tasks

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

Submissions (Bjarni Thor)

2019-03-06 12:26:08 68