oj.uz

Submission #642180

# Submission time Handle Problem Language Result Execution time Memory
642180 2022-09-18T15:50:28 Z skittles1412 Meetings 2 (JOI21_meetings2) C++17
100 / 100
 1534 ms 44704 KB 
#include "bits/extc++.h"

using namespace std;

template <typename T>
void dbgh(const T& t) {
    cerr << t << endl;
}

template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
    cerr << t << " | ";
    dbgh(u...);
}

#ifdef DEBUG
#define dbg(...)                                           \
    cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]" \
         << ": ";                                          \
    dbgh(__VA_ARGS__)
#else
#define cerr   \
    if (false) \
    cerr
#define dbg(...)
#endif

#define endl "\n"
#define mp make_pair
#define long int64_t
#define sz(x) int(std::size(x))

constexpr int maxn = 2e5 + 5;

bool vis[maxn];
int n, siz[maxn], depth[maxn], ans[maxn];
vector<int> graph[maxn], siz1[maxn];

void pdfs(int u, int p = -1) {
    siz[u] = 1;
    for (auto& v : graph[u]) {
        if (v != p) {
            pdfs(v, u);
            siz[u] += siz[v];
            siz1[u].push_back(siz[v]);
        } else {
            siz1[u].push_back(-1);
        }
    }
    if (p != -1) {
        *find(begin(siz1[u]), end(siz1[u]), -1) = n - siz[u];
    }
}

void go(int u) {
    struct DepthDfs {
        void dfs(int u, int p = -1, int d = 0) {
            depth[u] = d;
            for (auto& v : graph[u]) {
                if (!vis[v] && v != p) {
                    dfs(v, u, d + 1);
                }
            }
        }

        static void solve(int u) {
            DepthDfs().dfs(u);
        }
    };
    DepthDfs::solve(u);

    struct Dfs {
        vector<pair<int, int>> ch;

        void dfs(int u, int p) {
            for (int i = 0; i < sz(graph[u]); i++) {
                int v = graph[u][i];
                if (v == p) {
                    ch.emplace_back(n - siz1[u][i], depth[u]);
                } else if (!vis[v]) {
                    dfs(v, u);
                }
            }
        }

        static vector<pair<int, int>> solve(int u, int p) {
            Dfs d;
            d.dfs(u, p);
            return d.ch;
        }
    };

    for (int _i = 0; _i < 2; _i++) {
        map<int, int> copt;
        auto query = [&](int x, int d) -> void {
            auto it = copt.lower_bound(x);
            if (it != copt.end()) {
                ans[x] = max(ans[x], d + it->second);
            }
        };
        auto update = [&](int x, int d) -> void {
            auto it = copt.lower_bound(x);
            if (it != copt.end() && it->second >= d) {
                return;
            }
            while (it != copt.begin() && d >= (--it)->second) {
                it = copt.erase(it);
            }
            copt[x] = d;
        };

        for (int i = 0; i < sz(graph[u]); i++) {
            int v = graph[u][i], csz = n - siz1[u][i];
            if (vis[v]) {
                continue;
            }
            auto&& cv = Dfs::solve(v, u);
            for (auto& [x, d] : cv) {
                query(x, d);
                ans[min(x, csz)] = max(ans[min(x, csz)], d);
            }
            for (auto& [x, d] : cv) {
                update(x, d);
            }
        }

        reverse(begin(graph[u]), end(graph[u]));
        reverse(begin(siz1[u]), end(siz1[u]));
    }
}

void dfs(int u) {
    while (true) {
        pair<int, int> mx {-1, -1};
        for (auto& v : graph[u]) {
            if (!vis[v]) {
                mx = max(mx, mp(siz[v], v));
            }
        }
        if (mx.first <= siz[u] / 2) {
            break;
        }
        int v = mx.second;
        siz[u] -= siz[v];
        siz[v] += siz[u];
        u = v;
    }
    go(u);
    vis[u] = true;
    for (auto& v : graph[u]) {
        if (!vis[v]) {
            dfs(v);
        }
    }
}

void solve() {
    cin >> n;
    for (int i = 0; i < n - 1; i++) {
        int u, v;
        cin >> u >> v;
        u--;
        v--;
        graph[u].push_back(v);
        graph[v].push_back(u);
    }
    pdfs(0);
    dfs(0);
    for (int i = n; i >= 0; i--) {
        ans[i] = max(ans[i], ans[i + 1]);
    }
    for (int i = 1; i <= n; i++) {
        if (i & 1) {
            cout << 1 << endl;
        } else {
            cout << ans[i / 2] + 1 << endl;
        }
    }
}

int main() {
    cin.tie(nullptr);
    cin.exceptions(ios::failbit);
    ios_base::sync_with_stdio(false);
    solve();
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9620 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 6 ms 9684 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 6 ms 9724 KB Output is correct
12 Correct 5 ms 9684 KB Output is correct
13 Correct 5 ms 9612 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 6 ms 9700 KB Output is correct
16 Correct 6 ms 9684 KB Output is correct
17 Correct 5 ms 9732 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 6 ms 9668 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9620 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 6 ms 9684 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 6 ms 9724 KB Output is correct
12 Correct 5 ms 9684 KB Output is correct
13 Correct 5 ms 9612 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 6 ms 9700 KB Output is correct
16 Correct 6 ms 9684 KB Output is correct
17 Correct 5 ms 9732 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 6 ms 9668 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 14 ms 10068 KB Output is correct
23 Correct 15 ms 10124 KB Output is correct
24 Correct 11 ms 10068 KB Output is correct
25 Correct 11 ms 10124 KB Output is correct
26 Correct 11 ms 10068 KB Output is correct
27 Correct 11 ms 10068 KB Output is correct
28 Correct 12 ms 10052 KB Output is correct
29 Correct 12 ms 10052 KB Output is correct
30 Correct 11 ms 10132 KB Output is correct
31 Correct 15 ms 10068 KB Output is correct
32 Correct 21 ms 10228 KB Output is correct
33 Correct 18 ms 10448 KB Output is correct
34 Correct 9 ms 9996 KB Output is correct
35 Correct 8 ms 10068 KB Output is correct
36 Correct 12 ms 10056 KB Output is correct
37 Correct 8 ms 10068 KB Output is correct
38 Correct 17 ms 10196 KB Output is correct

Subtask #3
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9620 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 6 ms 9684 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 6 ms 9724 KB Output is correct
12 Correct 5 ms 9684 KB Output is correct
13 Correct 5 ms 9612 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 6 ms 9700 KB Output is correct
16 Correct 6 ms 9684 KB Output is correct
17 Correct 5 ms 9732 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 6 ms 9668 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 14 ms 10068 KB Output is correct
23 Correct 15 ms 10124 KB Output is correct
24 Correct 11 ms 10068 KB Output is correct
25 Correct 11 ms 10124 KB Output is correct
26 Correct 11 ms 10068 KB Output is correct
27 Correct 11 ms 10068 KB Output is correct
28 Correct 12 ms 10052 KB Output is correct
29 Correct 12 ms 10052 KB Output is correct
30 Correct 11 ms 10132 KB Output is correct
31 Correct 15 ms 10068 KB Output is correct
32 Correct 21 ms 10228 KB Output is correct
33 Correct 18 ms 10448 KB Output is correct
34 Correct 9 ms 9996 KB Output is correct
35 Correct 8 ms 10068 KB Output is correct
36 Correct 12 ms 10056 KB Output is correct
37 Correct 8 ms 10068 KB Output is correct
38 Correct 17 ms 10196 KB Output is correct
39 Correct 638 ms 26724 KB Output is correct
40 Correct 624 ms 26324 KB Output is correct
41 Correct 671 ms 26652 KB Output is correct
42 Correct 688 ms 26848 KB Output is correct
43 Correct 732 ms 27068 KB Output is correct
44 Correct 764 ms 26536 KB Output is correct
45 Correct 1496 ms 35612 KB Output is correct
46 Correct 1534 ms 44704 KB Output is correct
47 Correct 374 ms 28708 KB Output is correct
48 Correct 291 ms 29068 KB Output is correct
49 Correct 1036 ms 30516 KB Output is correct
50 Correct 360 ms 30604 KB Output is correct
51 Correct 942 ms 41612 KB Output is correct