CSES - NOI 2024

CSES - NOI 2024 - Results

Submission details
Task:	Anime Shops
Sender:	Sebastian Meineche Falk
Submission time:	2024-03-06 18:41:36 +0200
Language:	C++ (C++20)
Status:	READY
Result:	39

Feedback
group	verdict	score
#1	ACCEPTED	23
#2	ACCEPTED	16
#3	TIME LIMIT EXCEEDED	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 3	details
#2	ACCEPTED	0.00 s	1, 3	details
#3	ACCEPTED	0.01 s	1, 3	details
#4	ACCEPTED	0.01 s	1, 3	details
#5	ACCEPTED	0.14 s	3	details
#6	ACCEPTED	0.13 s	3	details
#7	ACCEPTED	0.14 s	3	details
#8	ACCEPTED	0.21 s	3	details
#9	ACCEPTED	0.05 s	2, 3	details
#10	ACCEPTED	0.05 s	2, 3	details
#11	ACCEPTED	0.10 s	2, 3	details
#12	ACCEPTED	0.06 s	3	details
#13	ACCEPTED	0.88 s	3	details
#14	TIME LIMIT EXCEEDED	--	3	details
#15	ACCEPTED	0.04 s	3	details
#16	ACCEPTED	0.05 s	3	details

Code

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
vector<ll> s;
vector<vector<ll>> adj;
 
int main() {
    ios::sync_with_stdio(false);

    random_device rd;
    mt19937 rng(rd());
 
    ll n, m, k;
    cin >> n >> m >> k;
    vector<bool> isS(n, false);
    for (ll i = 0; i < k; i++) {
        ll shop;
        cin >> shop;
        s.push_back(shop-1);
        isS[shop-1] = true;
    }
    shuffle(s.begin(), s.end(), rng);
    adj = vector<vector<ll>>(n);
    for (ll i = 0; i < m; i++) {
        ll a, b;
        cin >> a >> b;
        adj[a-1].push_back(b-1);
        adj[b-1].push_back(a-1);
    }
 
    vector<ll> dist(n, LLONG_MAX);
    queue<ll> q;
    for (ll i = 0; i < k; i++) {
        ll cur = s[i];
        q.push(cur);
        while (!q.empty()) {
            ll node = q.front(); q.pop();
            ll nw = (node != cur ? dist[node] : 0) + 1;
            for (auto &nb : adj[node]) {
                if (nw < dist[nb] && nb != cur) {
                    dist[nb] = nw;
                    q.push(nb);
                }
            }
        }
    }

    queue<pair<ll, ll>> qK;
    vector<ll> lastCur(n, -1);
    for (ll i = 0; i < k; i++) {
        ll cur = s[i];
        qK.push({cur, 0});
        bool flush = false;
        while (!qK.empty()) {
            auto pr = qK.front(); qK.pop();
            ll node = pr.first;
            if (lastCur[node] == cur || flush) continue;
            lastCur[node] = cur;
            ll nw = pr.second + 1;
            for (auto &nb : adj[node]) {
                if (isS[nb] && nb != cur) {
                    dist[cur] = nw;
                    flush = true;
                    continue;
                }
                qK.push({nb, nw});
            }
        }
    }
 
    for (ll i = 0; i < n; i++) {
        cout << (dist[i] != LLONG_MAX ? dist[i] : -1) << ' ';
    }
}

Test details

Test 1

Group: 1, 3

Verdict: ACCEPTED

input
`1000 2000 1 816 1 868 976 995 377 536 ...` view save

correct output
`4 3 3 4 6 4 -1 4 5 2 2 5 5 3 5...` view save

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

Test 2

Group: 1, 3

Verdict: ACCEPTED

input
`1000 2000 20 578 955 222 813 494 962 753 71...` view save

correct output
`5 6 4 3 4 2 -1 3 3 3 4 3 2 3 -...` view save

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

Test 3

Group: 1, 3

Verdict: ACCEPTED

input
`1000 2000 100 945 230 119 680 975 520 490 28...` view save

correct output
`2 2 3 -1 2 -1 3 2 2 1 2 -1 3 2...` view save

user output
`2 2 3 -1 2 -1 3 2 2 1 2 -1 3 2...` Truncated

Test 4

Group: 1, 3

Verdict: ACCEPTED

input
`1000 2000 1000 150 443 960 545 218 487 896 38...` view save

correct output
`1 -1 1 1 -1 1 1 1 -1 1 1 1 -1 ...` view save

user output
`1 -1 1 1 -1 1 1 1 -1 1 1 1 -1 ...` Truncated

Test 5

Group: 3

Verdict: ACCEPTED

input
`100000 200000 1 77222 59470 61811 43092 48939 14395 19964 ...` view save

correct output
`8 10 8 8 8 8 8 8 9 7 7 8 8 8 6...` view save

user output
`8 10 8 8 8 8 8 8 9 7 7 8 8 8 6...` Truncated

Test 6

Group: 3

Verdict: ACCEPTED

input
`100000 200000 20 70440 82302 64483 96767 51485 ...` view save

correct output
`-1 8 6 5 5 7 6 7 6 6 8 5 6 4 5...` view save

user output
`-1 8 6 5 5 7 6 7 6 6 8 5 6 4 5...` Truncated

Test 7

Group: 3

Verdict: ACCEPTED

input
`100000 200000 100 68738 37820 55519 77758 46482 ...` view save

correct output
`4 5 5 5 5 4 6 -1 5 4 5 6 4 5 5...` view save

user output
`4 5 5 5 5 4 6 -1 5 4 5 6 4 5 5...` Truncated

Test 8

Group: 3

Verdict: ACCEPTED

input
`100000 200000 100000 47137 80137 73347 78145 9205 6...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` Truncated

Test 9

Group: 2, 3

Verdict: ACCEPTED

input
`100000 99999 1 44158 1 2 2 3 3 4 ...` view save

correct output
`44157 44156 44155 44154 44153 ...` view save

user output
`44157 44156 44155 44154 44153 ...` Truncated

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
`100000 99999 20 44158 25720 84658 90057 99607 ...` view save

correct output
`361 360 359 358 357 356 355 35...` view save

user output
`361 360 359 358 357 356 355 35...` Truncated

Test 11

Group: 2, 3

Verdict: ACCEPTED

input
`100000 99999 100000 44158 25720 84658 90057 99607 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` Truncated

Test 12

Group: 3

Verdict: ACCEPTED

input
`100000 99999 3 99998 99999 100000 1 2 1 3 1 4 ...` view save

correct output
`33333 33332 33332 33332 33331 ...` view save

user output
`33333 33332 33332 33332 33331 ...` Truncated

Test 13

Group: 3

Verdict: ACCEPTED

input
`100000 99999 300 99701 99702 99703 99704 99705 ...` view save

correct output
`333 333 333 333 333 333 333 33...` view save

user output
`333 333 333 333 333 333 333 33...` Truncated

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

input
`100000 99999 30000 70001 70002 70003 70004 70005 ...` view save

correct output
`3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 ...` view save

user output
(empty)

Test 15

Group: 3

Verdict: ACCEPTED

input
`100000 0 100000 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

correct output
`-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...` view save

user output
`-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 ...` Truncated

Test 16

Group: 3

Verdict: ACCEPTED

input
`100000 100000 2 1 50001 1 2 2 3 3 4 ...` view save

correct output
`50000 1 2 3 4 5 6 7 8 9 10 11 ...` view save

user output
`50000 1 2 3 4 5 6 7 8 9 10 11 ...` Truncated

NOI 2024

Anime Shops

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

Tasks

Submissions (Sebastian Meineche Falk)