oj.uz

답안 #850628

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
850628 2023-09-17T07:47:57 Z danikoynov Tourism (JOI23_tourism) C++14
28 / 100
 5000 ms 27744 KB 
/**
 ____ ____ ____ ____ ____ ____
||l |||e |||i |||n |||a |||d ||
||__|||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|/__\|

**/

#include<bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}

const int maxn = 1e5 + 10;

struct query
{
    int l, r;
}task[maxn];

int n, m, c[maxn], q;
vector < int > adj[maxn];

void input()
{
    cin >> n >> m >> q;
    for (int i = 1; i < n; i ++)
    {
        int v, u;
        cin >> v >> u;
        adj[v].push_back(u);
        adj[u].push_back(v);
    }

    for (int i = 1; i <= m; i ++)
    {
        cin >> c[i];
    }

    for (int i = 1; i <= q; i ++)
    {
        cin >> task[i].l >> task[i].r;
    }
}


int depth[maxn], tin[maxn], tout[maxn];
int occ[2 * maxn], timer;

void euler(int v = 1, int p = - 1)
{
    occ[++ timer] = v;
    tin[v] = timer;
    for (int u : adj[v])
    {
        if (u == p)
            continue;
        depth[u] = depth[v] + 1;
        euler(u, v);
        occ[++ timer] = v;
    }
    tout[v] = timer;
}

const int maxlog = 20;

int lg[2 * maxn], dp[maxlog][2 * maxn];

void sparse_table()
{
    for (int i = 1; i <= timer; i ++)
    {
        lg[i] = lg[i / 2] + 1;
        dp[0][i] = occ[i];
    }

    for (int j = 1; j < lg[timer]; j ++)
        for (int i = 1; i <= timer - (1 << j); i ++)
    {
        dp[j][i] = dp[j - 1][i + (1 << (j - 1))];
        if (depth[dp[j - 1][i]] < depth[dp[j][i]])
            dp[j][i] = dp[j - 1][i];
    }
}

int get_lca(int v, int u)
{
    int l = tin[v], r = tin[u];
    if (l > r)
        swap(l, r);
    int len = lg[r - l + 1] - 1;
    int lca = dp[len][r - (1 << len) + 1];
    if (depth[dp[len][l]] < depth[lca])
        lca = dp[len][l];
    return lca;
}

int get_distance(int v, int u)
{
    return depth[v] + depth[u] - 2 * depth[get_lca(v, u)];
}

bool cmp_tin(int v, int u)
{
    return tin[v] < tin[u];
}
void solve_query(int left, int right)
{
    vector < int > ord;
    int global_lca = c[left];
    for (int i = left; i <= right; i ++)
    {
        ord.push_back(c[i]);
        global_lca = get_lca(global_lca, c[i]);
    }

    sort(ord.begin(), ord.end(), cmp_tin);

    int ans = 0;
    for (int i = 0; i < ord.size(); i ++)
    {
        ans = ans + depth[ord[i]] - depth[global_lca];
        if (i > 0)
        {
            ans = ans - (depth[get_lca(ord[i - 1], ord[i])] - depth[global_lca]);
        }
    }
    cout << ans  + 1 << endl;
}
void queries()
{
    for (int i = 1; i <= q; i ++)
        solve_query(task[i].l, task[i].r);
}
void solve()
{
    input();
    euler();
    sparse_table();
    queries();
}

int main()
{
    speed();
    solve();
    return 0;
}

Compilation message

tourism.cpp: In function 'void solve_query(int, int)':
tourism.cpp:128:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |     for (int i = 0; i < ord.size(); i ++)
      |                     ~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 2 ms 8536 KB Output is correct
3 Correct 1 ms 8536 KB Output is correct
4 Correct 3 ms 10840 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 3 ms 10588 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 2 ms 12636 KB Output is correct
9 Correct 4 ms 12632 KB Output is correct
10 Correct 4 ms 12632 KB Output is correct
11 Correct 4 ms 12888 KB Output is correct
12 Correct 8 ms 12636 KB Output is correct
13 Correct 8 ms 12632 KB Output is correct
14 Correct 8 ms 12632 KB Output is correct
15 Correct 4 ms 12636 KB Output is correct
16 Correct 4 ms 12632 KB Output is correct
17 Correct 4 ms 12632 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12632 KB Output is correct
20 Correct 4 ms 12632 KB Output is correct
21 Correct 4 ms 12632 KB Output is correct
22 Correct 4 ms 12632 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12632 KB Output is correct
25 Correct 4 ms 12632 KB Output is correct
26 Correct 4 ms 12632 KB Output is correct
27 Correct 2 ms 4440 KB Output is correct
28 Correct 2 ms 12636 KB Output is correct
29 Correct 2 ms 12632 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 2 ms 8536 KB Output is correct
3 Correct 1 ms 8536 KB Output is correct
4 Correct 3 ms 10840 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 3 ms 10588 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 2 ms 12636 KB Output is correct
9 Correct 4 ms 12632 KB Output is correct
10 Correct 4 ms 12632 KB Output is correct
11 Correct 4 ms 12888 KB Output is correct
12 Correct 8 ms 12636 KB Output is correct
13 Correct 8 ms 12632 KB Output is correct
14 Correct 8 ms 12632 KB Output is correct
15 Correct 4 ms 12636 KB Output is correct
16 Correct 4 ms 12632 KB Output is correct
17 Correct 4 ms 12632 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12632 KB Output is correct
20 Correct 4 ms 12632 KB Output is correct
21 Correct 4 ms 12632 KB Output is correct
22 Correct 4 ms 12632 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12632 KB Output is correct
25 Correct 4 ms 12632 KB Output is correct
26 Correct 4 ms 12632 KB Output is correct
27 Correct 2 ms 4440 KB Output is correct
28 Correct 2 ms 12636 KB Output is correct
29 Correct 2 ms 12632 KB Output is correct
30 Correct 51 ms 14988 KB Output is correct
31 Correct 75 ms 15008 KB Output is correct
32 Correct 123 ms 15024 KB Output is correct
33 Correct 110 ms 15192 KB Output is correct
34 Correct 107 ms 15024 KB Output is correct
35 Correct 340 ms 15020 KB Output is correct
36 Correct 342 ms 15020 KB Output is correct
37 Correct 337 ms 15192 KB Output is correct
38 Correct 108 ms 15140 KB Output is correct
39 Correct 109 ms 14940 KB Output is correct
40 Correct 112 ms 14936 KB Output is correct
41 Correct 342 ms 14940 KB Output is correct
42 Correct 333 ms 15168 KB Output is correct
43 Correct 337 ms 15124 KB Output is correct
44 Correct 104 ms 14936 KB Output is correct
45 Correct 108 ms 15060 KB Output is correct
46 Correct 109 ms 15080 KB Output is correct
47 Correct 333 ms 15064 KB Output is correct
48 Correct 336 ms 14936 KB Output is correct
49 Correct 339 ms 15072 KB Output is correct
50 Correct 108 ms 14936 KB Output is correct
51 Correct 111 ms 14940 KB Output is correct
52 Correct 110 ms 15028 KB Output is correct
53 Correct 105 ms 14940 KB Output is correct
54 Correct 109 ms 15036 KB Output is correct
55 Correct 109 ms 15032 KB Output is correct
56 Correct 45 ms 4440 KB Output is correct
57 Correct 3 ms 14936 KB Output is correct
58 Correct 3 ms 14940 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8536 KB Output is correct
2 Correct 2 ms 4440 KB Output is correct
3 Correct 43 ms 4444 KB Output is correct
4 Execution timed out 5033 ms 27744 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8536 KB Output is correct
2 Correct 27 ms 21592 KB Output is correct
3 Correct 35 ms 22060 KB Output is correct
4 Correct 33 ms 22096 KB Output is correct
5 Correct 56 ms 24268 KB Output is correct
6 Correct 57 ms 24116 KB Output is correct
7 Correct 56 ms 23632 KB Output is correct
8 Correct 54 ms 23636 KB Output is correct
9 Correct 56 ms 23632 KB Output is correct
10 Correct 67 ms 23660 KB Output is correct
11 Correct 55 ms 23636 KB Output is correct
12 Correct 54 ms 23716 KB Output is correct
13 Correct 49 ms 23632 KB Output is correct
14 Correct 60 ms 23988 KB Output is correct
15 Correct 64 ms 24472 KB Output is correct
16 Correct 54 ms 24144 KB Output is correct
17 Correct 69 ms 24028 KB Output is correct
18 Correct 53 ms 24092 KB Output is correct
19 Correct 53 ms 24268 KB Output is correct
20 Correct 51 ms 24076 KB Output is correct
21 Correct 51 ms 23948 KB Output is correct
22 Correct 50 ms 23632 KB Output is correct
23 Correct 50 ms 23632 KB Output is correct
24 Correct 48 ms 23628 KB Output is correct
25 Correct 48 ms 23632 KB Output is correct
26 Correct 49 ms 23784 KB Output is correct
27 Correct 47 ms 23768 KB Output is correct
28 Correct 46 ms 23644 KB Output is correct
29 Correct 46 ms 23632 KB Output is correct
30 Correct 48 ms 23828 KB Output is correct
31 Correct 53 ms 23892 KB Output is correct
32 Correct 50 ms 23880 KB Output is correct
33 Correct 53 ms 24144 KB Output is correct
34 Correct 57 ms 24656 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 2 ms 4440 KB Output is correct
3 Correct 43 ms 4656 KB Output is correct
4 Execution timed out 5025 ms 23828 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 2 ms 8536 KB Output is correct
3 Correct 1 ms 8536 KB Output is correct
4 Correct 3 ms 10840 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 3 ms 10588 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 2 ms 12636 KB Output is correct
9 Correct 4 ms 12632 KB Output is correct
10 Correct 4 ms 12632 KB Output is correct
11 Correct 4 ms 12888 KB Output is correct
12 Correct 8 ms 12636 KB Output is correct
13 Correct 8 ms 12632 KB Output is correct
14 Correct 8 ms 12632 KB Output is correct
15 Correct 4 ms 12636 KB Output is correct
16 Correct 4 ms 12632 KB Output is correct
17 Correct 4 ms 12632 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12632 KB Output is correct
20 Correct 4 ms 12632 KB Output is correct
21 Correct 4 ms 12632 KB Output is correct
22 Correct 4 ms 12632 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12632 KB Output is correct
25 Correct 4 ms 12632 KB Output is correct
26 Correct 4 ms 12632 KB Output is correct
27 Correct 2 ms 4440 KB Output is correct
28 Correct 2 ms 12636 KB Output is correct
29 Correct 2 ms 12632 KB Output is correct
30 Correct 51 ms 14988 KB Output is correct
31 Correct 75 ms 15008 KB Output is correct
32 Correct 123 ms 15024 KB Output is correct
33 Correct 110 ms 15192 KB Output is correct
34 Correct 107 ms 15024 KB Output is correct
35 Correct 340 ms 15020 KB Output is correct
36 Correct 342 ms 15020 KB Output is correct
37 Correct 337 ms 15192 KB Output is correct
38 Correct 108 ms 15140 KB Output is correct
39 Correct 109 ms 14940 KB Output is correct
40 Correct 112 ms 14936 KB Output is correct
41 Correct 342 ms 14940 KB Output is correct
42 Correct 333 ms 15168 KB Output is correct
43 Correct 337 ms 15124 KB Output is correct
44 Correct 104 ms 14936 KB Output is correct
45 Correct 108 ms 15060 KB Output is correct
46 Correct 109 ms 15080 KB Output is correct
47 Correct 333 ms 15064 KB Output is correct
48 Correct 336 ms 14936 KB Output is correct
49 Correct 339 ms 15072 KB Output is correct
50 Correct 108 ms 14936 KB Output is correct
51 Correct 111 ms 14940 KB Output is correct
52 Correct 110 ms 15028 KB Output is correct
53 Correct 105 ms 14940 KB Output is correct
54 Correct 109 ms 15036 KB Output is correct
55 Correct 109 ms 15032 KB Output is correct
56 Correct 45 ms 4440 KB Output is correct
57 Correct 3 ms 14936 KB Output is correct
58 Correct 3 ms 14940 KB Output is correct
59 Correct 2 ms 8536 KB Output is correct
60 Correct 2 ms 4440 KB Output is correct
61 Correct 43 ms 4444 KB Output is correct
62 Execution timed out 5033 ms 27744 KB Time limit exceeded
63 Halted 0 ms 0 KB -