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답안 #1001267

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1001267 2024-06-18T17:42:51 Z LonlyR Tourism (JOI23_tourism) C++17
28 / 100
 5000 ms 49068 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("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

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};

struct cmp
{
    bool operator() (int x, int y) const
    {
        return in[x] < in[y];
    }
};

set<int, cmp> 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.emplace_back(x);
    for (int i : adj[x]) if (i != p)
        dfs(i, x),
        euler.emplace_back(x);
    out[x] = cnt;
}

vector<vector<ii>> st;

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))]);
}

int lca(int l, int r)
{
    l = id[l];
    r = id[r];
    if (l > r) swap(l, r);
    int k = __lg(r - l + 1);
    return min(st[k][l], st[k][r - (1 << k) + 1]).ss;
}

void add(int x)
{
    x = c[x];
    in_set[x]++;
    if (in_set[x] == 1)
    {
        cur += h[x];
        if (s.size() == 0) return s.emplace(x), void();
        auto it = s.lower_bound(x);
        if (it == s.begin())
            cur -= h[lca(x, *it)];
        else if (it == s.end())
            cur -= h[lca(x, *prev(it))];
        else
        {
            auto u = *it, v = *prev(it);
            cur += h[lca(u, v)];
            cur -= h[lca(u, x)];
            cur -= h[lca(v, x)];
        }
    }
    s.emplace(x);
}

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(x);
        if (it == s.begin())
            cur += h[lca(x, *next(it))];
        else if (next(it) == s.end())
            cur += h[lca(x, *prev(it))];
        else
        {
            auto u = *prev(it), v = *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(0); 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].emplace_back(v),
        adj[v].emplace_back(u);
    for (int i = 1; i <= m; i++)
        cin >> c[i];
    dfs();
    build();
    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(*s.begin(), *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 6492 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 3 ms 6488 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 3 ms 6492 KB Output is correct
10 Correct 3 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 6488 KB Output is correct
15 Correct 3 ms 6492 KB Output is correct
16 Correct 3 ms 6492 KB Output is correct
17 Correct 3 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 3 ms 6732 KB Output is correct
20 Correct 3 ms 6488 KB Output is correct
21 Correct 3 ms 6720 KB Output is correct
22 Correct 3 ms 6492 KB Output is correct
23 Correct 3 ms 6492 KB Output is correct
24 Correct 3 ms 6492 KB Output is correct
25 Correct 3 ms 6492 KB Output is correct
26 Correct 3 ms 6716 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 6492 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 3 ms 6488 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 3 ms 6492 KB Output is correct
10 Correct 3 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 6488 KB Output is correct
15 Correct 3 ms 6492 KB Output is correct
16 Correct 3 ms 6492 KB Output is correct
17 Correct 3 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 3 ms 6732 KB Output is correct
20 Correct 3 ms 6488 KB Output is correct
21 Correct 3 ms 6720 KB Output is correct
22 Correct 3 ms 6492 KB Output is correct
23 Correct 3 ms 6492 KB Output is correct
24 Correct 3 ms 6492 KB Output is correct
25 Correct 3 ms 6492 KB Output is correct
26 Correct 3 ms 6716 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 16 ms 7004 KB Output is correct
31 Correct 19 ms 7004 KB Output is correct
32 Correct 24 ms 7004 KB Output is correct
33 Correct 25 ms 7004 KB Output is correct
34 Correct 24 ms 7004 KB Output is correct
35 Correct 4 ms 7000 KB Output is correct
36 Correct 4 ms 7004 KB Output is correct
37 Correct 3 ms 7004 KB Output is correct
38 Correct 23 ms 7260 KB Output is correct
39 Correct 24 ms 7260 KB Output is correct
40 Correct 23 ms 7256 KB Output is correct
41 Correct 4 ms 7256 KB Output is correct
42 Correct 6 ms 7316 KB Output is correct
43 Correct 4 ms 7260 KB Output is correct
44 Correct 25 ms 7252 KB Output is correct
45 Correct 25 ms 7004 KB Output is correct
46 Correct 24 ms 7004 KB Output is correct
47 Correct 4 ms 7004 KB Output is correct
48 Correct 4 ms 7004 KB Output is correct
49 Correct 5 ms 7232 KB Output is correct
50 Correct 22 ms 7208 KB Output is correct
51 Correct 21 ms 7004 KB Output is correct
52 Correct 21 ms 7216 KB Output is correct
53 Correct 22 ms 7000 KB Output is correct
54 Correct 22 ms 7004 KB Output is correct
55 Correct 22 ms 7004 KB Output is correct
56 Correct 4 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 1 ms 6492 KB Output is correct
3 Correct 3 ms 6492 KB Output is correct
4 Correct 4178 ms 30188 KB Output is correct
5 Correct 2502 ms 40932 KB Output is correct
6 Correct 3914 ms 45864 KB Output is correct
7 Execution timed out 5043 ms 49068 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 51 ms 24816 KB Output is correct
3 Correct 73 ms 26580 KB Output is correct
4 Correct 64 ms 30404 KB Output is correct
5 Correct 83 ms 42844 KB Output is correct
6 Correct 92 ms 42152 KB Output is correct
7 Correct 99 ms 41668 KB Output is correct
8 Correct 93 ms 41672 KB Output is correct
9 Correct 83 ms 41668 KB Output is correct
10 Correct 74 ms 41668 KB Output is correct
11 Correct 100 ms 41672 KB Output is correct
12 Correct 92 ms 41668 KB Output is correct
13 Correct 99 ms 41620 KB Output is correct
14 Correct 93 ms 41668 KB Output is correct
15 Correct 96 ms 41668 KB Output is correct
16 Correct 102 ms 41672 KB Output is correct
17 Correct 103 ms 41668 KB Output is correct
18 Correct 110 ms 41668 KB Output is correct
19 Correct 80 ms 42920 KB Output is correct
20 Correct 85 ms 42924 KB Output is correct
21 Correct 94 ms 41600 KB Output is correct
22 Correct 95 ms 41680 KB Output is correct
23 Correct 95 ms 41672 KB Output is correct
24 Correct 89 ms 41672 KB Output is correct
25 Correct 81 ms 41680 KB Output is correct
26 Correct 77 ms 41692 KB Output is correct
27 Correct 81 ms 41668 KB Output is correct
28 Correct 94 ms 41680 KB Output is correct
29 Correct 95 ms 41668 KB Output is correct
30 Correct 105 ms 41608 KB Output is correct
31 Correct 99 ms 41660 KB Output is correct
32 Correct 94 ms 41676 KB Output is correct
33 Correct 113 ms 41672 KB Output is correct
34 Correct 103 ms 41672 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 6492 KB Output is correct
3 Correct 3 ms 6492 KB Output is correct
4 Correct 4823 ms 27176 KB Output is correct
5 Execution timed out 5098 ms 27960 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 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 3 ms 6488 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 3 ms 6492 KB Output is correct
10 Correct 3 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 6488 KB Output is correct
15 Correct 3 ms 6492 KB Output is correct
16 Correct 3 ms 6492 KB Output is correct
17 Correct 3 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 3 ms 6732 KB Output is correct
20 Correct 3 ms 6488 KB Output is correct
21 Correct 3 ms 6720 KB Output is correct
22 Correct 3 ms 6492 KB Output is correct
23 Correct 3 ms 6492 KB Output is correct
24 Correct 3 ms 6492 KB Output is correct
25 Correct 3 ms 6492 KB Output is correct
26 Correct 3 ms 6716 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 16 ms 7004 KB Output is correct
31 Correct 19 ms 7004 KB Output is correct
32 Correct 24 ms 7004 KB Output is correct
33 Correct 25 ms 7004 KB Output is correct
34 Correct 24 ms 7004 KB Output is correct
35 Correct 4 ms 7000 KB Output is correct
36 Correct 4 ms 7004 KB Output is correct
37 Correct 3 ms 7004 KB Output is correct
38 Correct 23 ms 7260 KB Output is correct
39 Correct 24 ms 7260 KB Output is correct
40 Correct 23 ms 7256 KB Output is correct
41 Correct 4 ms 7256 KB Output is correct
42 Correct 6 ms 7316 KB Output is correct
43 Correct 4 ms 7260 KB Output is correct
44 Correct 25 ms 7252 KB Output is correct
45 Correct 25 ms 7004 KB Output is correct
46 Correct 24 ms 7004 KB Output is correct
47 Correct 4 ms 7004 KB Output is correct
48 Correct 4 ms 7004 KB Output is correct
49 Correct 5 ms 7232 KB Output is correct
50 Correct 22 ms 7208 KB Output is correct
51 Correct 21 ms 7004 KB Output is correct
52 Correct 21 ms 7216 KB Output is correct
53 Correct 22 ms 7000 KB Output is correct
54 Correct 22 ms 7004 KB Output is correct
55 Correct 22 ms 7004 KB Output is correct
56 Correct 4 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 1 ms 6492 KB Output is correct
61 Correct 3 ms 6492 KB Output is correct
62 Correct 4178 ms 30188 KB Output is correct
63 Correct 2502 ms 40932 KB Output is correct
64 Correct 3914 ms 45864 KB Output is correct
65 Execution timed out 5043 ms 49068 KB Time limit exceeded
66 Halted 0 ms 0 KB -