oj.uz

답안 #1001299

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1001299 2024-06-18T18:20:44 Z LonlyR Tourism (JOI23_tourism) C++17
28 / 100
 5000 ms 51700 KB 
#include<bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define ii pair<int,int>
#define ff first
#define ss second
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
 
using namespace std;
const int maxn = 1e5 + 5, bl = sqrt(maxn);
int n, m, q, cnt, cur;
int in[maxn], out[maxn], h[maxn], par[18][maxn], id[maxn], c[maxn], ans[maxn], in_set[maxn];
vector<int> adj[maxn], euler = {0};
int lgs[3*maxn];
 
int rev_in[maxn];
 
set<int> s;
 
struct Q{
    int l, r, id;
    bool operator < (Q b) const
    {
        if (l / bl != b.l / bl) return l < b.l;
        return (l / bl & 1) ? (r < b.r) : (r > b.r);
    }
} qr[maxn];
 
void dfs(int x = 1, int p = 1)
{
    h[x] = h[p] + 1;
    in[x] = ++cnt;
    id[x] = euler.size();
    euler.push_back(x);
    for (int i : adj[x]) if (i != p)
        dfs(i, x),
        euler.push_back(x);
    out[x] = cnt;
}
 
//inline bool sub(int u, int v) /// u in subtree of v
//{
//    return in[v] <= in[u] && out[u] <= out[v];
//}
//
//int lca(int u, int v)
//{
//    if (h[u] > h[v]) swap(u, v);
//    if (sub(v, u)) return u;
//    for (int i = 17; i >= 0; i--)
//        if (sub(u, par[i][v]) == 0)
//            v = par[i][v];
//    return par[0][v];
//}
 
vector<vector<ii>> st;
 
inline void build()
{
    int sz = euler.size();
    int LG = __lg(sz);
    st = vector<vector<ii>>(LG + 1, vector<ii>(sz, {sz, 0}));
    for (int i = 1; i < sz; i++) st[0][i] = {h[euler[i]], euler[i]};
    for (int j = 1; j <= LG; j++)
        for (int i = 1; i + (1 << j) - 1 < sz; i++)
            st[j][i] = min(st[j - 1][i], st[j - 1][i + (1 << (j - 1))]);
}
 
inline int lca(int l, int r)
{
    l = id[l];
    r = id[r];
    if (l > r) swap(l, r);
//    assert(r-l+1<=n);
    int k = lgs[(r - l + 1)];
    return min(st[k][l], st[k][r - (1 << k) + 1]).ss;
}
 
inline void add(int x)
{
    x = c[x];
    in_set[x]++;
    if (in_set[x] == 1)
    {
        cur += h[x];
        if (s.size() == 0) return s.insert(in[x]), void();
        auto it = s.lower_bound(in[x]);
        if (it == s.begin())
            cur -= h[lca(x, rev_in[*it])];
        else if (it == s.end())
            cur -= h[lca(x, rev_in[*prev(it)])];
        else
        {
            auto u = rev_in[*it], v = rev_in[*prev(it)];
            cur += h[lca(u, v)];
            cur -= h[lca(u, x)];
            cur -= h[lca(v, x)];
        }
    }
    s.insert(in[x]);
}
 
inline void del(int x)
{
    x = c[x];
    in_set[x]--;
    if (in_set[x] == 0)
    {
        cur -= h[x];
        if (s.size() == 1) return s.clear(), void();
        auto it = s.lower_bound(in[x]);
        if (it == s.begin())
            cur += h[lca(x, rev_in[*next(it)])];
        else if (next(it) == s.end())
            cur += h[lca(x, rev_in[*prev(it)])];
        else
        {
            auto u = rev_in[*prev(it)], v = rev_in[*next(it)];
            cur -= h[lca(u, v)];
            cur += h[lca(u, x)];
            cur += h[lca(v, x)];
        }
        s.erase(it);
    }
 
}
 
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); //cout.tie(0);
//    freopen("test.inp", "r", stdin);
//    freopen("test.out", "w", stdout);
    cin >> n >> m >> q;
    for (int i = 1, u, v; i < n; i++)
        cin >> u >> v,
        adj[u].push_back(v),
        adj[v].push_back(u);
    for (int i = 1; i <= m; i++)
        cin >> c[i];
    dfs();
    for (int i = 1; i <= 3*n; i++) lgs[i] = __lg(i);
    build();
    for (int i = 1; i <= n; i++) rev_in[in[i]] = i;
    for (int i = 1; i <= q; i++)
        cin >> qr[i].l >> qr[i].r, qr[i].id = i;
    sort(qr + 1, qr + q + 1);
    for (int i = 1, l = 1, r = 0; i <= q; i++)
    {
        auto [lx, rx, id] = qr[i];
        while (r < rx) add(++r);
        while (l > lx) add(--l);
        while (r > rx) del(r--);
        while (l < lx) del(l++);
        ans[id] = cur - h[lca(rev_in[*s.begin()], rev_in[*s.rbegin()])] + 1;
    }
    for (int i = 1; i <= q; i++) cout << ans[i] << "\n";
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6648 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6584 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 3 ms 6488 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 3 ms 6492 KB Output is correct
16 Correct 2 ms 6724 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6488 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6648 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6584 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 3 ms 6488 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 3 ms 6492 KB Output is correct
16 Correct 2 ms 6724 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6488 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 10 ms 7004 KB Output is correct
31 Correct 15 ms 6840 KB Output is correct
32 Correct 16 ms 7004 KB Output is correct
33 Correct 15 ms 7196 KB Output is correct
34 Correct 18 ms 7004 KB Output is correct
35 Correct 3 ms 7004 KB Output is correct
36 Correct 3 ms 7004 KB Output is correct
37 Correct 3 ms 7004 KB Output is correct
38 Correct 17 ms 7288 KB Output is correct
39 Correct 17 ms 7256 KB Output is correct
40 Correct 16 ms 7260 KB Output is correct
41 Correct 3 ms 7260 KB Output is correct
42 Correct 3 ms 7260 KB Output is correct
43 Correct 5 ms 7260 KB Output is correct
44 Correct 18 ms 7260 KB Output is correct
45 Correct 22 ms 7220 KB Output is correct
46 Correct 22 ms 7004 KB Output is correct
47 Correct 3 ms 7004 KB Output is correct
48 Correct 3 ms 7004 KB Output is correct
49 Correct 3 ms 7004 KB Output is correct
50 Correct 16 ms 7208 KB Output is correct
51 Correct 15 ms 7004 KB Output is correct
52 Correct 15 ms 7204 KB Output is correct
53 Correct 15 ms 7004 KB Output is correct
54 Correct 16 ms 7000 KB Output is correct
55 Correct 16 ms 7004 KB Output is correct
56 Correct 2 ms 6492 KB Output is correct
57 Correct 2 ms 7004 KB Output is correct
58 Correct 3 ms 7004 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 2 ms 6644 KB Output is correct
3 Correct 3 ms 6492 KB Output is correct
4 Correct 3119 ms 32228 KB Output is correct
5 Correct 2019 ms 42968 KB Output is correct
6 Correct 3132 ms 48168 KB Output is correct
7 Execution timed out 5060 ms 51700 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 53 ms 26948 KB Output is correct
3 Correct 79 ms 28628 KB Output is correct
4 Correct 66 ms 32464 KB Output is correct
5 Correct 69 ms 44972 KB Output is correct
6 Correct 78 ms 44368 KB Output is correct
7 Correct 91 ms 43756 KB Output is correct
8 Correct 84 ms 43716 KB Output is correct
9 Correct 76 ms 43720 KB Output is correct
10 Correct 72 ms 43716 KB Output is correct
11 Correct 85 ms 43720 KB Output is correct
12 Correct 94 ms 43652 KB Output is correct
13 Correct 119 ms 43688 KB Output is correct
14 Correct 95 ms 43720 KB Output is correct
15 Correct 92 ms 43724 KB Output is correct
16 Correct 99 ms 43904 KB Output is correct
17 Correct 94 ms 43752 KB Output is correct
18 Correct 96 ms 43728 KB Output is correct
19 Correct 64 ms 44972 KB Output is correct
20 Correct 68 ms 44968 KB Output is correct
21 Correct 82 ms 43720 KB Output is correct
22 Correct 81 ms 43736 KB Output is correct
23 Correct 80 ms 43716 KB Output is correct
24 Correct 74 ms 43720 KB Output is correct
25 Correct 74 ms 43716 KB Output is correct
26 Correct 76 ms 43724 KB Output is correct
27 Correct 78 ms 43764 KB Output is correct
28 Correct 106 ms 43720 KB Output is correct
29 Correct 93 ms 43716 KB Output is correct
30 Correct 90 ms 43716 KB Output is correct
31 Correct 93 ms 43716 KB Output is correct
32 Correct 92 ms 43716 KB Output is correct
33 Correct 91 ms 43728 KB Output is correct
34 Correct 93 ms 43716 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6504 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 3613 ms 29220 KB Output is correct
5 Correct 3859 ms 30024 KB Output is correct
6 Correct 4943 ms 40344 KB Output is correct
7 Execution timed out 5027 ms 46760 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6648 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6584 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 3 ms 6488 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 3 ms 6492 KB Output is correct
16 Correct 2 ms 6724 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6488 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 10 ms 7004 KB Output is correct
31 Correct 15 ms 6840 KB Output is correct
32 Correct 16 ms 7004 KB Output is correct
33 Correct 15 ms 7196 KB Output is correct
34 Correct 18 ms 7004 KB Output is correct
35 Correct 3 ms 7004 KB Output is correct
36 Correct 3 ms 7004 KB Output is correct
37 Correct 3 ms 7004 KB Output is correct
38 Correct 17 ms 7288 KB Output is correct
39 Correct 17 ms 7256 KB Output is correct
40 Correct 16 ms 7260 KB Output is correct
41 Correct 3 ms 7260 KB Output is correct
42 Correct 3 ms 7260 KB Output is correct
43 Correct 5 ms 7260 KB Output is correct
44 Correct 18 ms 7260 KB Output is correct
45 Correct 22 ms 7220 KB Output is correct
46 Correct 22 ms 7004 KB Output is correct
47 Correct 3 ms 7004 KB Output is correct
48 Correct 3 ms 7004 KB Output is correct
49 Correct 3 ms 7004 KB Output is correct
50 Correct 16 ms 7208 KB Output is correct
51 Correct 15 ms 7004 KB Output is correct
52 Correct 15 ms 7204 KB Output is correct
53 Correct 15 ms 7004 KB Output is correct
54 Correct 16 ms 7000 KB Output is correct
55 Correct 16 ms 7004 KB Output is correct
56 Correct 2 ms 6492 KB Output is correct
57 Correct 2 ms 7004 KB Output is correct
58 Correct 3 ms 7004 KB Output is correct
59 Correct 1 ms 6492 KB Output is correct
60 Correct 2 ms 6644 KB Output is correct
61 Correct 3 ms 6492 KB Output is correct
62 Correct 3119 ms 32228 KB Output is correct
63 Correct 2019 ms 42968 KB Output is correct
64 Correct 3132 ms 48168 KB Output is correct
65 Execution timed out 5060 ms 51700 KB Time limit exceeded
66 Halted 0 ms 0 KB -