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Submission #567877

# Submission time Handle Problem Language Result Execution time Memory
567877 2022-05-24T09:46:58 Z stevancv Village (BOI20_village) C++14
75 / 100
 95 ms 17680 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
using namespace std;
const int N = 1e5 + 2;
const ll mod = 1e9 + 7;
vector<int> adj[N];
int ans[N], sol;
int sz[N], dep[N], n;
vector<int> order;
void Dfs(int s, int e) {
    for (auto u : adj[s]) {
        if (u == e) continue;
        Dfs(u, s);
        if (ans[u] == u) {
            swap(ans[u], ans[s]);
            sol += 2;
        }
    }
}
void Dfsb(int s, int e) {
    sz[s] = 1;
    for (auto u : adj[s]) {
        if (u == e) continue;
        Dfsb(u, s);
        sz[s] += sz[u];
    }
}
int Dfs1b(int s, int e) {
    for (auto u : adj[s]) {
        if (u == e) continue;
        if (2 * sz[u] > n) return Dfs1b(u, s);
    }
    return s;
}
void Dfs2b(int s, int e) {
    order.push_back(s);
    for (auto u : adj[s]) {
        if (u == e) continue;
        dep[u] = dep[s] + 1;
        Dfs2b(u, s);
    }
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for (int i = 1; i < n; i++) {
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    for (int i = 1; i <= n; i++) ans[i] = i;
    Dfs(1, 0);
    if (ans[1] == 1) {
        swap(ans[1], ans[adj[1][0]]);
        sol += 2;
    }
    ll solmn = sol;
    vector<int> ansmn;
    for (int i = 1; i <= n; i++) {
        ansmn.push_back(ans[i]);
        ans[i] = 0;
    }
    Dfsb(1, 0);
    int cen = Dfs1b(1, 0);
    Dfs2b(cen, 0);
    sol = 0;
    for (int i = 0; i < n; i++) {
        int x = order[i];
        int y = order[(i + n / 2) % n];
        ans[x] = y;
        sol += dep[x] + dep[y];
    }
    cout << solmn << sp << sol << en;
    for (int i : ansmn) cout << i << sp;
    cout << en;
    for (int i = 1; i <= n; i++) cout << ans[i] << sp;
    cout << en;
    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2680 KB Output is correct
4 Correct 2 ms 2672 KB Output is correct
5 Correct 2 ms 2676 KB Output is correct
6 Correct 2 ms 2676 KB Output is correct
7 Correct 2 ms 2676 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2676 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2676 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2676 KB Output is correct

Subtask #2
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2676 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 3 ms 2752 KB Output is correct
9 Correct 2 ms 2676 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 3 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2680 KB Output is correct
22 Correct 3 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2676 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 3 ms 2680 KB Output is correct

Subtask #3
25.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2680 KB Output is correct
4 Correct 2 ms 2672 KB Output is correct
5 Correct 2 ms 2676 KB Output is correct
6 Correct 2 ms 2676 KB Output is correct
7 Correct 2 ms 2676 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2676 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2676 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2676 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2676 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2772 KB Output is correct
25 Correct 3 ms 2752 KB Output is correct
26 Correct 2 ms 2676 KB Output is correct
27 Correct 2 ms 2772 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2644 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 3 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2644 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 2 ms 2680 KB Output is correct
39 Correct 3 ms 2644 KB Output is correct
40 Correct 2 ms 2644 KB Output is correct
41 Correct 2 ms 2676 KB Output is correct
42 Correct 2 ms 2644 KB Output is correct
43 Correct 2 ms 2644 KB Output is correct
44 Correct 2 ms 2644 KB Output is correct
45 Correct 2 ms 2644 KB Output is correct
46 Correct 2 ms 2644 KB Output is correct
47 Correct 3 ms 2680 KB Output is correct
48 Correct 64 ms 9560 KB Output is correct
49 Correct 83 ms 10268 KB Output is correct
50 Correct 64 ms 10364 KB Output is correct
51 Correct 47 ms 8712 KB Output is correct
52 Correct 62 ms 10152 KB Output is correct
53 Correct 58 ms 9552 KB Output is correct
54 Correct 34 ms 9932 KB Output is correct
55 Partially correct 86 ms 17680 KB Partially correct
56 Partially correct 95 ms 13784 KB Partially correct
57 Correct 71 ms 12552 KB Output is correct
58 Correct 86 ms 11516 KB Output is correct
59 Correct 66 ms 10312 KB Output is correct
60 Correct 48 ms 10444 KB Output is correct
61 Correct 50 ms 10664 KB Output is correct
62 Correct 52 ms 10684 KB Output is correct
63 Correct 55 ms 10228 KB Output is correct
64 Correct 53 ms 10612 KB Output is correct
65 Correct 55 ms 10704 KB Output is correct
66 Correct 51 ms 10256 KB Output is correct
67 Correct 36 ms 8512 KB Output is correct
68 Correct 43 ms 9488 KB Output is correct
69 Correct 53 ms 10708 KB Output is correct
70 Correct 50 ms 10284 KB Output is correct
71 Correct 34 ms 8264 KB Output is correct
72 Correct 40 ms 9028 KB Output is correct
73 Correct 56 ms 10744 KB Output is correct
74 Correct 48 ms 10088 KB Output is correct
75 Correct 72 ms 10284 KB Output is correct
76 Correct 66 ms 10164 KB Output is correct
77 Correct 55 ms 10324 KB Output is correct
78 Correct 35 ms 7888 KB Output is correct
79 Correct 42 ms 8732 KB Output is correct
80 Correct 70 ms 10184 KB Output is correct
81 Correct 65 ms 10508 KB Output is correct
82 Correct 53 ms 10568 KB Output is correct