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답안 #910946

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
910946 2024-01-18T10:04:57 Z Tuanlinh123 Meetings 2 (JOI21_meetings2) C++17
100 / 100
 984 ms 57480 KB 
#include<bits/stdc++.h>
#define ll long long
#define pll pair<ll, ll>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ld long double
using namespace std;

const ll maxn=200005;
vector <ll> A[maxn]; 
ll child[maxn], used[maxn], ans[maxn];
ll Time, tin[maxn], tout[maxn], dis[maxn];

struct SegTree
{
    ll n;
    vector <ll> St;
    SegTree(ll n): n(n) {St.assign(n*4+1, -1);}

    void update(ll i, ll Start, ll End, ll idx, ll val)
    {
        if (Start==End)
        {
            St[i]=val;
            return;
        }
        ll mid=(Start+End)/2;
        if (mid>=idx) update(i*2, Start, mid, idx, val);
        if (mid+1<=idx) update(i*2+1, mid+1, End, idx, val);
        St[i]=max(St[i*2], St[i*2+1]);
    }

    ll query(ll i, ll Start, ll End, ll l, ll r)
    {
        if (Start>r || End<l)
            return -1;
        if (Start>=l && End<=r)
            return St[i];
        ll mid=(Start+End)/2;
        if (mid<l) return query(i*2+1, mid+1, End, l, r);
        if (mid+1>r) return query(i*2, Start, mid, l, r);
        return max(query(i*2, Start, mid, l, r), query(i*2+1, mid+1, End, l, r));
    }
};

void getchild(ll u, ll pa)
{
    child[u]=1;
    for (ll v:A[u])
        if (v!=pa && !used[v])
            getchild(v, u), child[u]+=child[v];
}

ll findcen(ll u, ll pa, ll n)
{
    for (ll v:A[u])
        if (v!=pa && !used[v] && child[v]*2>n)
            return findcen(v, u, n);
    return u;
}

void getlist(ll u, ll pa, ll r, vector <pair<ll, pll>> &a)
{
    child[u]=1, tin[u]=++Time, dis[u]=dis[pa]+1;
    for (ll v:A[u])
        if (v!=pa && !used[v])
            getlist(v, u, r, a), child[u]+=child[v];
    tout[u]=Time;
    a.pb({child[u], {u, r}});
}

void solve(ll u)
{
    getchild(u, u);
    u=findcen(u, u, child[u]);
    vector <pair<ll, pll>> a; 
    Time=tin[u]=1, dis[u]=0;
    for (ll v:A[u])
        if (!used[v])
            getlist(v, u, v, a);
    sort(a.begin(), a.end(), greater<pair<ll, pll>>());
    SegTree S(Time);
    for (pair<ll, pll> i:a)
    {
        ll c=i.fi, idx=i.se.fi, r=i.se.se;
        ll Max=max(S.query(1, 1, Time, 1, tin[r]-1), S.query(1, 1, Time, tout[r]+1, Time));
        if (Max>=0) ans[c]=max(ans[c], dis[idx]+Max+1);
        ans[min(c, Time-child[r])]=max(ans[min(c, Time-child[r])], dis[idx]+1);
        S.update(1, 1, Time, tin[idx], dis[idx]);
    }
    used[u]=1;
    for (ll v:A[u])
        if (!used[v])
            solve(v);
}   

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll n; cin >> n;
    for (ll i=1; i<n; i++)
    {
        ll u, v; cin >> u >> v;
        A[u].pb(v); A[v].pb(u);
    }
    solve(1);
    for (ll i=n; i>=1; i--)
        ans[i]=max(ans[i+1], ans[i]);
    for (ll i=1; i<=n; i++)
    {
        if (i%2==1) cout << "1\n";
        else cout << max(1ll, ans[i/2]) << "\n";
    }
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12312 KB Output is correct
5 Correct 3 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12312 KB Output is correct
8 Correct 4 ms 12308 KB Output is correct
9 Correct 5 ms 12124 KB Output is correct
10 Correct 3 ms 12312 KB Output is correct
11 Correct 3 ms 12320 KB Output is correct
12 Correct 4 ms 12316 KB Output is correct
13 Correct 4 ms 12312 KB Output is correct
14 Correct 4 ms 12124 KB Output is correct
15 Correct 4 ms 12120 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 3 ms 12320 KB Output is correct
18 Correct 4 ms 12124 KB Output is correct
19 Correct 5 ms 12124 KB Output is correct
20 Correct 4 ms 12320 KB Output is correct
21 Correct 3 ms 12124 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12312 KB Output is correct
5 Correct 3 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12312 KB Output is correct
8 Correct 4 ms 12308 KB Output is correct
9 Correct 5 ms 12124 KB Output is correct
10 Correct 3 ms 12312 KB Output is correct
11 Correct 3 ms 12320 KB Output is correct
12 Correct 4 ms 12316 KB Output is correct
13 Correct 4 ms 12312 KB Output is correct
14 Correct 4 ms 12124 KB Output is correct
15 Correct 4 ms 12120 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 3 ms 12320 KB Output is correct
18 Correct 4 ms 12124 KB Output is correct
19 Correct 5 ms 12124 KB Output is correct
20 Correct 4 ms 12320 KB Output is correct
21 Correct 3 ms 12124 KB Output is correct
22 Correct 9 ms 12836 KB Output is correct
23 Correct 9 ms 13008 KB Output is correct
24 Correct 11 ms 12928 KB Output is correct
25 Correct 9 ms 12928 KB Output is correct
26 Correct 10 ms 12892 KB Output is correct
27 Correct 10 ms 12892 KB Output is correct
28 Correct 9 ms 12892 KB Output is correct
29 Correct 12 ms 12892 KB Output is correct
30 Correct 10 ms 12836 KB Output is correct
31 Correct 9 ms 12952 KB Output is correct
32 Correct 11 ms 13148 KB Output is correct
33 Correct 10 ms 13148 KB Output is correct
34 Correct 6 ms 12892 KB Output is correct
35 Correct 6 ms 12892 KB Output is correct
36 Correct 11 ms 12892 KB Output is correct
37 Correct 7 ms 12888 KB Output is correct
38 Correct 11 ms 13180 KB Output is correct

Subtask #3
80.0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12124 KB Output is correct
2 Correct 3 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12312 KB Output is correct
5 Correct 3 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 3 ms 12312 KB Output is correct
8 Correct 4 ms 12308 KB Output is correct
9 Correct 5 ms 12124 KB Output is correct
10 Correct 3 ms 12312 KB Output is correct
11 Correct 3 ms 12320 KB Output is correct
12 Correct 4 ms 12316 KB Output is correct
13 Correct 4 ms 12312 KB Output is correct
14 Correct 4 ms 12124 KB Output is correct
15 Correct 4 ms 12120 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 3 ms 12320 KB Output is correct
18 Correct 4 ms 12124 KB Output is correct
19 Correct 5 ms 12124 KB Output is correct
20 Correct 4 ms 12320 KB Output is correct
21 Correct 3 ms 12124 KB Output is correct
22 Correct 9 ms 12836 KB Output is correct
23 Correct 9 ms 13008 KB Output is correct
24 Correct 11 ms 12928 KB Output is correct
25 Correct 9 ms 12928 KB Output is correct
26 Correct 10 ms 12892 KB Output is correct
27 Correct 10 ms 12892 KB Output is correct
28 Correct 9 ms 12892 KB Output is correct
29 Correct 12 ms 12892 KB Output is correct
30 Correct 10 ms 12836 KB Output is correct
31 Correct 9 ms 12952 KB Output is correct
32 Correct 11 ms 13148 KB Output is correct
33 Correct 10 ms 13148 KB Output is correct
34 Correct 6 ms 12892 KB Output is correct
35 Correct 6 ms 12892 KB Output is correct
36 Correct 11 ms 12892 KB Output is correct
37 Correct 7 ms 12888 KB Output is correct
38 Correct 11 ms 13180 KB Output is correct
39 Correct 766 ms 44096 KB Output is correct
40 Correct 757 ms 43600 KB Output is correct
41 Correct 654 ms 44212 KB Output is correct
42 Correct 660 ms 42920 KB Output is correct
43 Correct 684 ms 43700 KB Output is correct
44 Correct 685 ms 43184 KB Output is correct
45 Correct 984 ms 52844 KB Output is correct
46 Correct 937 ms 57480 KB Output is correct
47 Correct 309 ms 34544 KB Output is correct
48 Correct 253 ms 36164 KB Output is correct
49 Correct 761 ms 46704 KB Output is correct
50 Correct 303 ms 43192 KB Output is correct
51 Correct 532 ms 52280 KB Output is correct