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Submission #685547

# Submission time Handle Problem Language Result Execution time Memory
685547 2023-01-24T14:03:05 Z stanislavpolyn Village (BOI20_village) C++17
6 / 100
 700 ms 3668 KB 
#include <bits/stdc++.h>

#define fr(i, a, b) for (int i = (a); i <= (b); ++i)
#define rf(i, a, b) for (int i = (a); i >= (b); --i)
#define fe(x, y) for (auto& x : y)

#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define mt make_tuple

#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define pw(x) (1LL << (x))

using namespace std;

mt19937_64 rng(228);

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template <typename T>
using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define fbo find_by_order
#define ook order_of_key

template <typename T>
bool umn(T& a, T b) {
    return a > b ? a = b, 1 : 0;
}
template <typename T>
bool umx(T& a, T b) {
    return a < b ? a = b, 1 : 0;
}

using ll = long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template <typename T>
using ve = vector<T>;

const int N = 1e5 + 5;

int n;
ve<int> g[N];

int dist[1001][1001];
int start;

void dfs(int v, int p, int dep) {
    dist[start][v] = dep;
    fe (to, g[v]) {
        if (to == p) continue;
        dfs(to, v, dep + 1);
    }
}

int p[N];

void dfs1(int v = 1, int p = 0) {
    ::p[v] = p;
    fe (to, g[v]) {
        if (to == p) continue;
        dfs1(to, v);
    }
}

int main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#else
    ios::sync_with_stdio(0);
    cin.tie(0);
#endif
    cin >> n;

    fr (i, 1, n - 1) {
        int a, b;
        cin >> a >> b;

        g[a].pb(b);
        g[b].pb(a);
    }

    if (n <= 1000) {
        for (start = 1; start <= n; start++) {
            dfs(start, 0, 0);
        }
    }

    dfs1();

    {
        ll mx = -1e18;
        ve<int> mxP;
        ll mn = 1e18;
        ve<int> mnP;

        ve<int> p;
        fr (i, 1, n) p.pb(i);
        do {
            bool bad = 0;
            fr (i, 0, sz(p) - 1) {
                bad |= p[i] == i + 1;
            }
            if (!bad) {
                ll sum = 0;
                fr (i, 0, sz(p) - 1) {
                    sum += dist[i + 1][p[i]];
                }
                if (umx(mx, sum)) {
                    mxP = p;
                }

                bad = 0;
                int cnt = 0;
                fr (i, 0, sz(p) - 1) {
                    if (p[p[i] - 1] == i + 1) {
                        continue;
                    }
                    cnt++;
                }
                bad |= cnt > 3;

                if (!bad) {
                    if (umn(mn, sum)) {
                        mnP = p;
                    }
                }
            }
        } while (next_permutation(all(p)));

        cout << mn << " " << mx << "\n";
        fe (x, mnP) cout << x << " ";
        cout << "\n";

        fr (i, 0, sz(mnP) - 1) {
            assert(dist[i + 1][mnP[i]] <= 2);
        }
        fe (x, mxP) cout << x << " ";
        cout << "\n";
        cout << "\n";
    }

    return 0;
}

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 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 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 9 ms 2644 KB Output is correct
10 Correct 82 ms 2644 KB Output is correct
11 Correct 94 ms 2644 KB Output is correct
12 Correct 97 ms 2644 KB Output is correct
13 Partially correct 76 ms 2700 KB Partially correct
14 Correct 83 ms 2704 KB Output is correct
15 Partially correct 86 ms 2696 KB Partially correct
16 Partially correct 87 ms 2696 KB Partially correct
17 Partially correct 79 ms 2700 KB Partially correct

Subtask #2
0.0 / 38.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1084 ms 3668 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 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 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 9 ms 2644 KB Output is correct
10 Correct 82 ms 2644 KB Output is correct
11 Correct 94 ms 2644 KB Output is correct
12 Correct 97 ms 2644 KB Output is correct
13 Partially correct 76 ms 2700 KB Partially correct
14 Correct 83 ms 2704 KB Output is correct
15 Partially correct 86 ms 2696 KB Partially correct
16 Partially correct 87 ms 2696 KB Partially correct
17 Partially correct 79 ms 2700 KB Partially correct
18 Execution timed out 1084 ms 3668 KB Time limit exceeded
19 Halted 0 ms 0 KB -