oj.uz

Submission #804408

# Submission time Handle Problem Language Result Execution time Memory
804408 2023-08-03T08:33:59 Z mousebeaver Tourism (JOI23_tourism) C++14
28 / 100
 5000 ms 34956 KB 
#define ll long long
#define INF numeric_limits<ll>::max()
#include <bits/stdc++.h>
using namespace std;

void init(ll i, vector<ll>& depth, vector<vector<ll>>& adjlist, vector<bool>& visited, vector<ll>& subtree, vector<vector<ll>>& jump)
{
    visited[i] = true;

    for(ll j : adjlist[i])
    {
        if(visited[j])
        {
            jump[0][i] = j;
            depth[i] = depth[j]+1;
        }
    }
    for(ll j : adjlist[i])
    {
        if(!visited[j])
        {
            init(j, depth, adjlist, visited, subtree, jump);
            subtree[i] += subtree[j];
        }
    }
}

ll lift(ll a, vector<vector<ll>>& jump, ll dist)
{
    for(ll i = jump.size()-1; i >= 0 && a != -1; i--)
    {
        if(((1<<i)&dist) != 0)
        {
            a = jump[i][a];
        }
    }
    return a;
}

ll lca(ll a, ll b, vector<vector<ll>>& jump, vector<ll>& depth)
{
    if(depth[a] < depth[b])
        swap(a, b);
    a = lift(a, jump, depth[a]-depth[b]);

    if(a == b)
    {
        return a;
    }

    for(ll j = jump.size()-1; j >= 0; j--)
    {
        if(jump[j][a] != jump[j][b])
        {
            a = jump[j][a];
            b = jump[j][b];
        }
    }
    return jump[0][a];
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    ll n, m, q;
    cin>>n>>m>>q;
    vector<vector<ll>> adjlist(n, vector<ll> (0));
    bool sub3 = true;
    for(ll i = 0; i < n-1; i++)
    {
        ll a, b;
        cin>>a>>b;
        a--; b--;
        if(a != i || b != i+1)
        {
            sub3 = false;
        }
        adjlist[a].push_back(b);
        adjlist[b].push_back(a);
    }

    ll segnodes = 1;
    ll logdepth = 0;
    while(2*n > segnodes)
    {
        segnodes *= 2;
        logdepth++;
    }
    vector<vector<ll>> jump(logdepth, vector<ll> (n, -1));

    vector<ll> subtree(n, 1);
    vector<bool> visited(n, false);
    vector<ll> depth(n, 0);
    init(0, depth, adjlist, visited, subtree, jump);

    for(ll i = 1; i < logdepth; i++)
    {
        for(ll j = 0; j < n; j++)
        {
            if(jump[i-1][j] != -1)
            {
                jump[i][j] = jump[i-1][jump[i-1][j]];
            }
        }
    }

    vector<ll> c(m);
    for(ll i = 0; i < m; i++)
    {
        cin>>c[i];
        c[i]--;
    }

    for(ll x = 0; x < q; x++)
    {
        ll left, right;
        cin>>left>>right;
        left--; right--;

        if(left == right)
        {
            cout<<1<<"\n";
            continue;
        }
        if(sub3)
        {
            ll top = INF;
            ll bottom = -1;
            for(ll i = left; i <= right; i++)
            {
                top = min(top, depth[c[i]]);
                bottom = max(bottom, depth[c[i]]);
            }
            cout<<bottom+1-top<<"\n";
            continue;
        }

        ll l = lca(c[left], c[left+1], jump, depth);
        for(ll i = left+2; i <= right; i++)
        {
            l = lca(l, c[i], jump, depth);
        }

        visited.assign(n, false);
        visited[l] = true;
        ll counter = 1;
        for(ll i = left; i <= right; i++)
        {
            ll node = c[i];
            while(!visited[node])
            {
                visited[node] = true;
                counter++;
                node = jump[0][node];
            }
        }
        cout<<counter<<"\n";
    }


    return 0;  
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 368 KB Output is correct
12 Correct 3 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 3 ms 368 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 368 KB Output is correct
12 Correct 3 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 3 ms 368 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 23 ms 588 KB Output is correct
31 Correct 32 ms 580 KB Output is correct
32 Correct 48 ms 668 KB Output is correct
33 Correct 50 ms 596 KB Output is correct
34 Correct 47 ms 596 KB Output is correct
35 Correct 112 ms 672 KB Output is correct
36 Correct 121 ms 660 KB Output is correct
37 Correct 113 ms 672 KB Output is correct
38 Correct 87 ms 772 KB Output is correct
39 Correct 77 ms 724 KB Output is correct
40 Correct 76 ms 724 KB Output is correct
41 Correct 233 ms 804 KB Output is correct
42 Correct 233 ms 812 KB Output is correct
43 Correct 235 ms 780 KB Output is correct
44 Correct 75 ms 724 KB Output is correct
45 Correct 67 ms 708 KB Output is correct
46 Correct 75 ms 736 KB Output is correct
47 Correct 211 ms 700 KB Output is correct
48 Correct 200 ms 680 KB Output is correct
49 Correct 220 ms 716 KB Output is correct
50 Correct 27 ms 688 KB Output is correct
51 Correct 28 ms 596 KB Output is correct
52 Correct 27 ms 600 KB Output is correct
53 Correct 33 ms 724 KB Output is correct
54 Correct 29 ms 688 KB Output is correct
55 Correct 29 ms 596 KB Output is correct
56 Correct 2 ms 340 KB Output is correct
57 Correct 1 ms 596 KB Output is correct
58 Correct 1 ms 596 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 3531 ms 18604 KB Output is correct
5 Correct 2170 ms 27848 KB Output is correct
6 Correct 2736 ms 31524 KB Output is correct
7 Execution timed out 5103 ms 34956 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 34 ms 12244 KB Output is correct
3 Correct 46 ms 13428 KB Output is correct
4 Correct 46 ms 15620 KB Output is correct
5 Correct 84 ms 22908 KB Output is correct
6 Correct 68 ms 22896 KB Output is correct
7 Correct 55 ms 22872 KB Output is correct
8 Correct 55 ms 22896 KB Output is correct
9 Correct 66 ms 22820 KB Output is correct
10 Correct 56 ms 22844 KB Output is correct
11 Correct 69 ms 22908 KB Output is correct
12 Correct 74 ms 22892 KB Output is correct
13 Correct 78 ms 22904 KB Output is correct
14 Correct 90 ms 22876 KB Output is correct
15 Correct 69 ms 23012 KB Output is correct
16 Correct 86 ms 22904 KB Output is correct
17 Correct 76 ms 22916 KB Output is correct
18 Correct 75 ms 22920 KB Output is correct
19 Correct 53 ms 22460 KB Output is correct
20 Correct 57 ms 22376 KB Output is correct
21 Correct 58 ms 22420 KB Output is correct
22 Correct 71 ms 22496 KB Output is correct
23 Correct 74 ms 22488 KB Output is correct
24 Correct 91 ms 22460 KB Output is correct
25 Correct 117 ms 22388 KB Output is correct
26 Correct 162 ms 22524 KB Output is correct
27 Correct 203 ms 22500 KB Output is correct
28 Correct 240 ms 22512 KB Output is correct
29 Correct 300 ms 22500 KB Output is correct
30 Correct 398 ms 22552 KB Output is correct
31 Correct 404 ms 22532 KB Output is correct
32 Correct 479 ms 22476 KB Output is correct
33 Correct 398 ms 22528 KB Output is correct
34 Correct 60 ms 22848 KB Output is correct

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 212 KB Output is correct
4 Execution timed out 5052 ms 12912 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 368 KB Output is correct
12 Correct 3 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 3 ms 368 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 23 ms 588 KB Output is correct
31 Correct 32 ms 580 KB Output is correct
32 Correct 48 ms 668 KB Output is correct
33 Correct 50 ms 596 KB Output is correct
34 Correct 47 ms 596 KB Output is correct
35 Correct 112 ms 672 KB Output is correct
36 Correct 121 ms 660 KB Output is correct
37 Correct 113 ms 672 KB Output is correct
38 Correct 87 ms 772 KB Output is correct
39 Correct 77 ms 724 KB Output is correct
40 Correct 76 ms 724 KB Output is correct
41 Correct 233 ms 804 KB Output is correct
42 Correct 233 ms 812 KB Output is correct
43 Correct 235 ms 780 KB Output is correct
44 Correct 75 ms 724 KB Output is correct
45 Correct 67 ms 708 KB Output is correct
46 Correct 75 ms 736 KB Output is correct
47 Correct 211 ms 700 KB Output is correct
48 Correct 200 ms 680 KB Output is correct
49 Correct 220 ms 716 KB Output is correct
50 Correct 27 ms 688 KB Output is correct
51 Correct 28 ms 596 KB Output is correct
52 Correct 27 ms 600 KB Output is correct
53 Correct 33 ms 724 KB Output is correct
54 Correct 29 ms 688 KB Output is correct
55 Correct 29 ms 596 KB Output is correct
56 Correct 2 ms 340 KB Output is correct
57 Correct 1 ms 596 KB Output is correct
58 Correct 1 ms 596 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 2 ms 340 KB Output is correct
62 Correct 3531 ms 18604 KB Output is correct
63 Correct 2170 ms 27848 KB Output is correct
64 Correct 2736 ms 31524 KB Output is correct
65 Execution timed out 5103 ms 34956 KB Time limit exceeded
66 Halted 0 ms 0 KB -