oj.uz

답안 #829284

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
829284 2023-08-18T08:14:34 Z Hanksburger Tourism (JOI23_tourism) C++17
10 / 100
 5000 ms 18140 KB 
#include <bits/stdc++.h>
using namespace std;
int par[100005][20], depth[100005], tin[100005], val[100005], c[100005], n, m, q, t;
vector<pair<int, int> > vec;
vector<int> adj[100005];
void dfs(int u, int p)
{
    par[u][0]=p;
    for (int i=1; i<20; i++)
        par[u][i]=par[par[u][i-1]][i-1];
    tin[u]=(++t);
    for (int v:adj[u])
    {
        if (v==p)
            continue;
        depth[v]=depth[u]+1;
        dfs(v, u);
    }
}
void dfs2(int u, int p)
{
    for (int v:adj[u])
    {
        if (v==p)
            continue;
        dfs2(v, u);
        val[u]+=val[v];
    }
}
int lca(int u, int v)
{
    if (depth[u]<depth[v])
        swap(u, v);
    for (int i=19; i>=0; i--)
        if ((depth[u]-depth[v])&(1<<i))
            u=par[u][i];
    if (u==v)
        return u;
    for (int i=19; i>=0; i--)
        if (par[u][i]!=par[v][i])
            u=par[u][i], v=par[v][i];
    return par[u][0];
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m >> q;
    for (int i=1; i<n; i++)
    {
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    dfs(1, 1);
    for (int i=1; i<=m; i++)
        cin >> c[i];
    for (int i=1; i<=q; i++)
    {
        int l, r, ans=0;
        cin >> l >> r;
        if (l==r)
        {
            cout << 1 << '\n';
            continue;
        }
        for (int j=1; j<=n; j++)
            val[j]=0;
        vec.clear();
        for (int j=l; j<=r; j++)
            vec.push_back({tin[c[j]], c[j]});
        sort(vec.begin(), vec.end());
        for (int j=1; j<vec.size(); j++)
        {
            val[vec[j-1].second]++;
            val[vec[j].second]++;
        //    cout << "val " << vec[j-1].second << " +1\n";
        //    cout << "val " << vec[j].second << " +1\n";
            int LCA=lca(vec[j-1].second, vec[j].second);
            if (LCA!=1)
            {
                val[par[LCA][0]]-=2;
        //        cout << "val " << par[LCA][0] << " -2\n";
            }
        }
        dfs2(1, 1);
        for (int j=1; j<=n; j++)
            if (val[j])
                ans++;
        cout << ans << '\n';
    }
}

Compilation message

tourism.cpp: In function 'int main()':
tourism.cpp:75:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         for (int j=1; j<vec.size(); j++)
      |                       ~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 4 ms 2644 KB Output is correct
5 Correct 3 ms 2672 KB Output is correct
6 Correct 4 ms 2644 KB Output is correct
7 Correct 3 ms 2680 KB Output is correct
8 Correct 3 ms 2680 KB Output is correct
9 Correct 6 ms 2688 KB Output is correct
10 Correct 5 ms 2684 KB Output is correct
11 Correct 5 ms 2688 KB Output is correct
12 Correct 9 ms 2644 KB Output is correct
13 Correct 13 ms 2736 KB Output is correct
14 Correct 11 ms 2740 KB Output is correct
15 Correct 5 ms 2644 KB Output is correct
16 Correct 5 ms 2684 KB Output is correct
17 Correct 5 ms 2644 KB Output is correct
18 Correct 4 ms 2644 KB Output is correct
19 Correct 5 ms 2688 KB Output is correct
20 Correct 4 ms 2644 KB Output is correct
21 Correct 4 ms 2644 KB Output is correct
22 Correct 4 ms 2644 KB Output is correct
23 Correct 4 ms 2644 KB Output is correct
24 Correct 5 ms 2684 KB Output is correct
25 Correct 5 ms 2664 KB Output is correct
26 Correct 4 ms 2740 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2684 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 4 ms 2644 KB Output is correct
5 Correct 3 ms 2672 KB Output is correct
6 Correct 4 ms 2644 KB Output is correct
7 Correct 3 ms 2680 KB Output is correct
8 Correct 3 ms 2680 KB Output is correct
9 Correct 6 ms 2688 KB Output is correct
10 Correct 5 ms 2684 KB Output is correct
11 Correct 5 ms 2688 KB Output is correct
12 Correct 9 ms 2644 KB Output is correct
13 Correct 13 ms 2736 KB Output is correct
14 Correct 11 ms 2740 KB Output is correct
15 Correct 5 ms 2644 KB Output is correct
16 Correct 5 ms 2684 KB Output is correct
17 Correct 5 ms 2644 KB Output is correct
18 Correct 4 ms 2644 KB Output is correct
19 Correct 5 ms 2688 KB Output is correct
20 Correct 4 ms 2644 KB Output is correct
21 Correct 4 ms 2644 KB Output is correct
22 Correct 4 ms 2644 KB Output is correct
23 Correct 4 ms 2644 KB Output is correct
24 Correct 5 ms 2684 KB Output is correct
25 Correct 5 ms 2664 KB Output is correct
26 Correct 4 ms 2740 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2684 KB Output is correct
30 Correct 79 ms 2924 KB Output is correct
31 Correct 115 ms 2924 KB Output is correct
32 Correct 174 ms 3000 KB Output is correct
33 Correct 169 ms 3004 KB Output is correct
34 Correct 167 ms 3004 KB Output is correct
35 Correct 439 ms 3004 KB Output is correct
36 Correct 429 ms 3032 KB Output is correct
37 Correct 424 ms 3004 KB Output is correct
38 Correct 155 ms 3116 KB Output is correct
39 Correct 154 ms 3028 KB Output is correct
40 Correct 155 ms 3128 KB Output is correct
41 Correct 388 ms 3140 KB Output is correct
42 Correct 379 ms 3156 KB Output is correct
43 Correct 385 ms 3096 KB Output is correct
44 Correct 156 ms 3028 KB Output is correct
45 Correct 158 ms 3044 KB Output is correct
46 Correct 169 ms 3060 KB Output is correct
47 Correct 389 ms 3048 KB Output is correct
48 Correct 385 ms 3028 KB Output is correct
49 Correct 391 ms 3048 KB Output is correct
50 Correct 138 ms 3028 KB Output is correct
51 Correct 152 ms 3020 KB Output is correct
52 Correct 143 ms 3008 KB Output is correct
53 Correct 137 ms 3016 KB Output is correct
54 Correct 141 ms 3028 KB Output is correct
55 Correct 142 ms 3016 KB Output is correct
56 Correct 49 ms 2740 KB Output is correct
57 Correct 2 ms 2900 KB Output is correct
58 Correct 3 ms 2868 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2680 KB Output is correct
3 Correct 50 ms 2736 KB Output is correct
4 Execution timed out 5040 ms 16528 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2153 ms 10664 KB Output is correct
3 Correct 2474 ms 11524 KB Output is correct
4 Correct 2782 ms 12392 KB Output is correct
5 Correct 88 ms 18140 KB Output is correct
6 Correct 92 ms 17752 KB Output is correct
7 Correct 101 ms 17184 KB Output is correct
8 Correct 171 ms 16968 KB Output is correct
9 Correct 336 ms 17140 KB Output is correct
10 Correct 826 ms 17032 KB Output is correct
11 Correct 2294 ms 17040 KB Output is correct
12 Execution timed out 5039 ms 17060 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 3 ms 2644 KB Output is correct
3 Correct 53 ms 2752 KB Output is correct
4 Execution timed out 5038 ms 12300 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 4 ms 2644 KB Output is correct
5 Correct 3 ms 2672 KB Output is correct
6 Correct 4 ms 2644 KB Output is correct
7 Correct 3 ms 2680 KB Output is correct
8 Correct 3 ms 2680 KB Output is correct
9 Correct 6 ms 2688 KB Output is correct
10 Correct 5 ms 2684 KB Output is correct
11 Correct 5 ms 2688 KB Output is correct
12 Correct 9 ms 2644 KB Output is correct
13 Correct 13 ms 2736 KB Output is correct
14 Correct 11 ms 2740 KB Output is correct
15 Correct 5 ms 2644 KB Output is correct
16 Correct 5 ms 2684 KB Output is correct
17 Correct 5 ms 2644 KB Output is correct
18 Correct 4 ms 2644 KB Output is correct
19 Correct 5 ms 2688 KB Output is correct
20 Correct 4 ms 2644 KB Output is correct
21 Correct 4 ms 2644 KB Output is correct
22 Correct 4 ms 2644 KB Output is correct
23 Correct 4 ms 2644 KB Output is correct
24 Correct 5 ms 2684 KB Output is correct
25 Correct 5 ms 2664 KB Output is correct
26 Correct 4 ms 2740 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2684 KB Output is correct
30 Correct 79 ms 2924 KB Output is correct
31 Correct 115 ms 2924 KB Output is correct
32 Correct 174 ms 3000 KB Output is correct
33 Correct 169 ms 3004 KB Output is correct
34 Correct 167 ms 3004 KB Output is correct
35 Correct 439 ms 3004 KB Output is correct
36 Correct 429 ms 3032 KB Output is correct
37 Correct 424 ms 3004 KB Output is correct
38 Correct 155 ms 3116 KB Output is correct
39 Correct 154 ms 3028 KB Output is correct
40 Correct 155 ms 3128 KB Output is correct
41 Correct 388 ms 3140 KB Output is correct
42 Correct 379 ms 3156 KB Output is correct
43 Correct 385 ms 3096 KB Output is correct
44 Correct 156 ms 3028 KB Output is correct
45 Correct 158 ms 3044 KB Output is correct
46 Correct 169 ms 3060 KB Output is correct
47 Correct 389 ms 3048 KB Output is correct
48 Correct 385 ms 3028 KB Output is correct
49 Correct 391 ms 3048 KB Output is correct
50 Correct 138 ms 3028 KB Output is correct
51 Correct 152 ms 3020 KB Output is correct
52 Correct 143 ms 3008 KB Output is correct
53 Correct 137 ms 3016 KB Output is correct
54 Correct 141 ms 3028 KB Output is correct
55 Correct 142 ms 3016 KB Output is correct
56 Correct 49 ms 2740 KB Output is correct
57 Correct 2 ms 2900 KB Output is correct
58 Correct 3 ms 2868 KB Output is correct
59 Correct 2 ms 2644 KB Output is correct
60 Correct 2 ms 2680 KB Output is correct
61 Correct 50 ms 2736 KB Output is correct
62 Execution timed out 5040 ms 16528 KB Time limit exceeded
63 Halted 0 ms 0 KB -