oj.uz

Submission #1001272

# Submission time Handle Problem Language Result Execution time Memory
1001272 2024-06-18T17:46:20 Z lam Tourism (JOI23_tourism) C++14
28 / 100
 5000 ms 52680 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 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);
    int k = __lg(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();
    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";
}

Compilation message

tourism.cpp: In function 'int main()':
tourism.cpp:147:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  147 |         auto [lx, rx, id] = qr[i];
      |              ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory 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 3 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 3 ms 6492 KB Output is correct
8 Correct 2 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 3 ms 6492 KB Output is correct
11 Correct 3 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 2 ms 6576 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 3 ms 6488 KB Output is correct
20 Correct 3 ms 6492 KB Output is correct
21 Correct 3 ms 6708 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 3 ms 6492 KB Output is correct
26 Correct 3 ms 6712 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

# Verdict Execution time Memory 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 3 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 3 ms 6492 KB Output is correct
8 Correct 2 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 3 ms 6492 KB Output is correct
11 Correct 3 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 2 ms 6576 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 3 ms 6488 KB Output is correct
20 Correct 3 ms 6492 KB Output is correct
21 Correct 3 ms 6708 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 3 ms 6492 KB Output is correct
26 Correct 3 ms 6712 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 14 ms 7004 KB Output is correct
31 Correct 12 ms 7048 KB Output is correct
32 Correct 17 ms 7196 KB Output is correct
33 Correct 16 ms 7204 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 15 ms 7284 KB Output is correct
39 Correct 19 ms 7260 KB Output is correct
40 Correct 14 ms 7288 KB Output is correct
41 Correct 3 ms 7260 KB Output is correct
42 Correct 4 ms 7260 KB Output is correct
43 Correct 2 ms 7260 KB Output is correct
44 Correct 18 ms 7004 KB Output is correct
45 Correct 16 ms 7216 KB Output is correct
46 Correct 16 ms 7240 KB Output is correct
47 Correct 2 ms 7000 KB Output is correct
48 Correct 3 ms 7004 KB Output is correct
49 Correct 3 ms 7004 KB Output is correct
50 Correct 17 ms 7004 KB Output is correct
51 Correct 13 ms 7200 KB Output is correct
52 Correct 14 ms 7188 KB Output is correct
53 Correct 14 ms 7004 KB Output is correct
54 Correct 14 ms 7200 KB Output is correct
55 Correct 20 ms 7204 KB Output is correct
56 Correct 2 ms 6492 KB Output is correct
57 Correct 1 ms 7004 KB Output is correct
58 Correct 3 ms 7004 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6488 KB Output is correct
3 Correct 3 ms 6492 KB Output is correct
4 Correct 3741 ms 30176 KB Output is correct
5 Correct 1911 ms 40928 KB Output is correct
6 Correct 3239 ms 45968 KB Output is correct
7 Correct 4874 ms 49804 KB Output is correct
8 Correct 4894 ms 52680 KB Output is correct
9 Correct 4922 ms 52548 KB Output is correct
10 Execution timed out 5047 ms 52644 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 46 ms 25040 KB Output is correct
3 Correct 66 ms 26432 KB Output is correct
4 Correct 58 ms 30408 KB Output is correct
5 Correct 71 ms 42916 KB Output is correct
6 Correct 87 ms 42156 KB Output is correct
7 Correct 96 ms 41640 KB Output is correct
8 Correct 101 ms 41672 KB Output is correct
9 Correct 77 ms 41716 KB Output is correct
10 Correct 77 ms 41680 KB Output is correct
11 Correct 87 ms 41460 KB Output is correct
12 Correct 92 ms 41676 KB Output is correct
13 Correct 92 ms 41672 KB Output is correct
14 Correct 99 ms 41680 KB Output is correct
15 Correct 109 ms 41568 KB Output is correct
16 Correct 94 ms 41668 KB Output is correct
17 Correct 98 ms 41668 KB Output is correct
18 Correct 94 ms 41680 KB Output is correct
19 Correct 65 ms 42892 KB Output is correct
20 Correct 87 ms 42924 KB Output is correct
21 Correct 90 ms 41672 KB Output is correct
22 Correct 89 ms 41668 KB Output is correct
23 Correct 78 ms 41668 KB Output is correct
24 Correct 82 ms 41672 KB Output is correct
25 Correct 72 ms 41668 KB Output is correct
26 Correct 78 ms 41668 KB Output is correct
27 Correct 91 ms 41672 KB Output is correct
28 Correct 123 ms 41668 KB Output is correct
29 Correct 101 ms 41672 KB Output is correct
30 Correct 100 ms 41680 KB Output is correct
31 Correct 89 ms 41668 KB Output is correct
32 Correct 96 ms 41708 KB Output is correct
33 Correct 87 ms 41676 KB Output is correct
34 Correct 87 ms 41552 KB Output is correct

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 3712 ms 27168 KB Output is correct
5 Correct 3861 ms 27964 KB Output is correct
6 Correct 4893 ms 38292 KB Output is correct
7 Execution timed out 5041 ms 45736 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# Verdict Execution time Memory 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 3 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 3 ms 6492 KB Output is correct
8 Correct 2 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 3 ms 6492 KB Output is correct
11 Correct 3 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 2 ms 6576 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 3 ms 6492 KB Output is correct
19 Correct 3 ms 6488 KB Output is correct
20 Correct 3 ms 6492 KB Output is correct
21 Correct 3 ms 6708 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 3 ms 6492 KB Output is correct
26 Correct 3 ms 6712 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 14 ms 7004 KB Output is correct
31 Correct 12 ms 7048 KB Output is correct
32 Correct 17 ms 7196 KB Output is correct
33 Correct 16 ms 7204 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 15 ms 7284 KB Output is correct
39 Correct 19 ms 7260 KB Output is correct
40 Correct 14 ms 7288 KB Output is correct
41 Correct 3 ms 7260 KB Output is correct
42 Correct 4 ms 7260 KB Output is correct
43 Correct 2 ms 7260 KB Output is correct
44 Correct 18 ms 7004 KB Output is correct
45 Correct 16 ms 7216 KB Output is correct
46 Correct 16 ms 7240 KB Output is correct
47 Correct 2 ms 7000 KB Output is correct
48 Correct 3 ms 7004 KB Output is correct
49 Correct 3 ms 7004 KB Output is correct
50 Correct 17 ms 7004 KB Output is correct
51 Correct 13 ms 7200 KB Output is correct
52 Correct 14 ms 7188 KB Output is correct
53 Correct 14 ms 7004 KB Output is correct
54 Correct 14 ms 7200 KB Output is correct
55 Correct 20 ms 7204 KB Output is correct
56 Correct 2 ms 6492 KB Output is correct
57 Correct 1 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 6488 KB Output is correct
61 Correct 3 ms 6492 KB Output is correct
62 Correct 3741 ms 30176 KB Output is correct
63 Correct 1911 ms 40928 KB Output is correct
64 Correct 3239 ms 45968 KB Output is correct
65 Correct 4874 ms 49804 KB Output is correct
66 Correct 4894 ms 52680 KB Output is correct
67 Correct 4922 ms 52548 KB Output is correct
68 Execution timed out 5047 ms 52644 KB Time limit exceeded
69 Halted 0 ms 0 KB -