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답안 #796285

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
796285 2023-07-28T08:52:37 Z finn__ Tourism (JOI23_tourism) C++17
28 / 100
 5000 ms 23740 KB 
#include <bits/stdc++.h>
using namespace std;

constexpr size_t N = 100000, LGN = 18;

size_t c[N], e[N], anc[LGN][N], h[N], preorder[N];
vector<size_t> g[N];

size_t traverse(size_t u, size_t p, size_t i = 0)
{
    preorder[u] = i++;
    for (auto const &v : g[u])
        if (v != p)
        {
            h[v] = h[u] + 1;
            anc[0][v] = u;
            for (size_t i = 1; i < LGN; ++i)
                anc[i][v] = anc[i - 1][anc[i - 1][v]];
            i = traverse(v, u, i);
        }
    return i;
}

size_t lift(size_t u, size_t d)
{
    size_t z = 0;
    while (d)
    {
        if (d & 1)
            u = anc[z][u];
        ++z;
        d >>= 1;
    }
    return u;
}

size_t lca(size_t u, size_t v)
{
    if (h[u] < h[v])
        swap(u, v);
    u = lift(u, h[u] - h[v]);
    if (u == v)
        return u;
    for (size_t i = LGN - 1; i < LGN; --i)
        if (anc[i][u] != anc[i][v])
            u = anc[i][u], v = anc[i][v];
    return anc[0][u];
}

size_t distance(size_t u, size_t v)
{
    return h[u] + h[v] - (h[lca(u, v)] << 1);
}

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

    size_t n, m, q;
    cin >> n >> m >> q;

    for (size_t i = 0; i < n - 1; ++i)
    {
        size_t u, v;
        cin >> u >> v;
        g[u - 1].push_back(v - 1);
        g[v - 1].push_back(u - 1);
    }

    traverse(0, -1);

    for (size_t i = 0; i < m; ++i)
        cin >> c[i], --c[i];

    while (q--)
    {
        size_t l, r;
        cin >> l >> r, --l, --r;
        memcpy(e + l, c + l, (r - l + 1) * sizeof *c);
        sort(e + l, e + r + 1, [](size_t u, size_t v)
             { return preorder[u] < preorder[v]; });
        size_t distance_sum = distance(e[l], e[r]);
        for (size_t i = l; i < r; ++i)
            distance_sum += distance(e[i], e[i + 1]);
        cout << (distance_sum >> 1) + 1 << '\n';
    }
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2772 KB Output is correct
2 Correct 1 ms 2772 KB Output is correct
3 Correct 1 ms 2772 KB Output is correct
4 Correct 3 ms 2772 KB Output is correct
5 Correct 3 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 2772 KB Output is correct
10 Correct 4 ms 2864 KB Output is correct
11 Correct 3 ms 2772 KB Output is correct
12 Correct 6 ms 2772 KB Output is correct
13 Correct 6 ms 2772 KB Output is correct
14 Correct 6 ms 2772 KB Output is correct
15 Correct 3 ms 2772 KB Output is correct
16 Correct 3 ms 2772 KB Output is correct
17 Correct 3 ms 2772 KB Output is correct
18 Correct 3 ms 2772 KB Output is correct
19 Correct 4 ms 2780 KB Output is correct
20 Correct 3 ms 2772 KB Output is correct
21 Correct 4 ms 2772 KB Output is correct
22 Correct 4 ms 2864 KB Output is correct
23 Correct 4 ms 2772 KB Output is correct
24 Correct 4 ms 2772 KB Output is correct
25 Correct 4 ms 2828 KB Output is correct
26 Correct 4 ms 2772 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2772 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2772 KB Output is correct
2 Correct 1 ms 2772 KB Output is correct
3 Correct 1 ms 2772 KB Output is correct
4 Correct 3 ms 2772 KB Output is correct
5 Correct 3 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 2772 KB Output is correct
10 Correct 4 ms 2864 KB Output is correct
11 Correct 3 ms 2772 KB Output is correct
12 Correct 6 ms 2772 KB Output is correct
13 Correct 6 ms 2772 KB Output is correct
14 Correct 6 ms 2772 KB Output is correct
15 Correct 3 ms 2772 KB Output is correct
16 Correct 3 ms 2772 KB Output is correct
17 Correct 3 ms 2772 KB Output is correct
18 Correct 3 ms 2772 KB Output is correct
19 Correct 4 ms 2780 KB Output is correct
20 Correct 3 ms 2772 KB Output is correct
21 Correct 4 ms 2772 KB Output is correct
22 Correct 4 ms 2864 KB Output is correct
23 Correct 4 ms 2772 KB Output is correct
24 Correct 4 ms 2772 KB Output is correct
25 Correct 4 ms 2828 KB Output is correct
26 Correct 4 ms 2772 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2772 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct
30 Correct 67 ms 3156 KB Output is correct
31 Correct 80 ms 3104 KB Output is correct
32 Correct 121 ms 3204 KB Output is correct
33 Correct 118 ms 3220 KB Output is correct
34 Correct 122 ms 3200 KB Output is correct
35 Correct 318 ms 3200 KB Output is correct
36 Correct 310 ms 3204 KB Output is correct
37 Correct 331 ms 3196 KB Output is correct
38 Correct 75 ms 3272 KB Output is correct
39 Correct 79 ms 3284 KB Output is correct
40 Correct 74 ms 3296 KB Output is correct
41 Correct 219 ms 3300 KB Output is correct
42 Correct 217 ms 3284 KB Output is correct
43 Correct 218 ms 3272 KB Output is correct
44 Correct 76 ms 3228 KB Output is correct
45 Correct 80 ms 3224 KB Output is correct
46 Correct 79 ms 3252 KB Output is correct
47 Correct 223 ms 3216 KB Output is correct
48 Correct 223 ms 3212 KB Output is correct
49 Correct 225 ms 3232 KB Output is correct
50 Correct 129 ms 3204 KB Output is correct
51 Correct 125 ms 3224 KB Output is correct
52 Correct 132 ms 3196 KB Output is correct
53 Correct 132 ms 3216 KB Output is correct
54 Correct 128 ms 3156 KB Output is correct
55 Correct 123 ms 3156 KB Output is correct
56 Correct 13 ms 2644 KB Output is correct
57 Correct 2 ms 3156 KB Output is correct
58 Correct 2 ms 3156 KB Output is correct

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2772 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 13 ms 2728 KB Output is correct
4 Execution timed out 5022 ms 18048 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2772 KB Output is correct
2 Correct 48 ms 14164 KB Output is correct
3 Correct 61 ms 15540 KB Output is correct
4 Correct 63 ms 16888 KB Output is correct
5 Correct 99 ms 23560 KB Output is correct
6 Correct 114 ms 23616 KB Output is correct
7 Correct 165 ms 23616 KB Output is correct
8 Correct 124 ms 23568 KB Output is correct
9 Correct 143 ms 23500 KB Output is correct
10 Correct 128 ms 23496 KB Output is correct
11 Correct 155 ms 23624 KB Output is correct
12 Correct 133 ms 23620 KB Output is correct
13 Correct 128 ms 23536 KB Output is correct
14 Correct 130 ms 23624 KB Output is correct
15 Correct 86 ms 23740 KB Output is correct
16 Correct 132 ms 23588 KB Output is correct
17 Correct 122 ms 23592 KB Output is correct
18 Correct 124 ms 23592 KB Output is correct
19 Correct 75 ms 23108 KB Output is correct
20 Correct 87 ms 23064 KB Output is correct
21 Correct 86 ms 23116 KB Output is correct
22 Correct 83 ms 23092 KB Output is correct
23 Correct 88 ms 23080 KB Output is correct
24 Correct 99 ms 23116 KB Output is correct
25 Correct 107 ms 23068 KB Output is correct
26 Correct 125 ms 23244 KB Output is correct
27 Correct 130 ms 23080 KB Output is correct
28 Correct 120 ms 23056 KB Output is correct
29 Correct 144 ms 23036 KB Output is correct
30 Correct 133 ms 23172 KB Output is correct
31 Correct 194 ms 23164 KB Output is correct
32 Correct 137 ms 23140 KB Output is correct
33 Correct 122 ms 23188 KB Output is correct
34 Correct 92 ms 23388 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2772 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 14 ms 2724 KB Output is correct
4 Execution timed out 5042 ms 15236 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 2772 KB Output is correct
2 Correct 1 ms 2772 KB Output is correct
3 Correct 1 ms 2772 KB Output is correct
4 Correct 3 ms 2772 KB Output is correct
5 Correct 3 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 2772 KB Output is correct
10 Correct 4 ms 2864 KB Output is correct
11 Correct 3 ms 2772 KB Output is correct
12 Correct 6 ms 2772 KB Output is correct
13 Correct 6 ms 2772 KB Output is correct
14 Correct 6 ms 2772 KB Output is correct
15 Correct 3 ms 2772 KB Output is correct
16 Correct 3 ms 2772 KB Output is correct
17 Correct 3 ms 2772 KB Output is correct
18 Correct 3 ms 2772 KB Output is correct
19 Correct 4 ms 2780 KB Output is correct
20 Correct 3 ms 2772 KB Output is correct
21 Correct 4 ms 2772 KB Output is correct
22 Correct 4 ms 2864 KB Output is correct
23 Correct 4 ms 2772 KB Output is correct
24 Correct 4 ms 2772 KB Output is correct
25 Correct 4 ms 2828 KB Output is correct
26 Correct 4 ms 2772 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2772 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct
30 Correct 67 ms 3156 KB Output is correct
31 Correct 80 ms 3104 KB Output is correct
32 Correct 121 ms 3204 KB Output is correct
33 Correct 118 ms 3220 KB Output is correct
34 Correct 122 ms 3200 KB Output is correct
35 Correct 318 ms 3200 KB Output is correct
36 Correct 310 ms 3204 KB Output is correct
37 Correct 331 ms 3196 KB Output is correct
38 Correct 75 ms 3272 KB Output is correct
39 Correct 79 ms 3284 KB Output is correct
40 Correct 74 ms 3296 KB Output is correct
41 Correct 219 ms 3300 KB Output is correct
42 Correct 217 ms 3284 KB Output is correct
43 Correct 218 ms 3272 KB Output is correct
44 Correct 76 ms 3228 KB Output is correct
45 Correct 80 ms 3224 KB Output is correct
46 Correct 79 ms 3252 KB Output is correct
47 Correct 223 ms 3216 KB Output is correct
48 Correct 223 ms 3212 KB Output is correct
49 Correct 225 ms 3232 KB Output is correct
50 Correct 129 ms 3204 KB Output is correct
51 Correct 125 ms 3224 KB Output is correct
52 Correct 132 ms 3196 KB Output is correct
53 Correct 132 ms 3216 KB Output is correct
54 Correct 128 ms 3156 KB Output is correct
55 Correct 123 ms 3156 KB Output is correct
56 Correct 13 ms 2644 KB Output is correct
57 Correct 2 ms 3156 KB Output is correct
58 Correct 2 ms 3156 KB Output is correct
59 Correct 1 ms 2772 KB Output is correct
60 Correct 2 ms 2644 KB Output is correct
61 Correct 13 ms 2728 KB Output is correct
62 Execution timed out 5022 ms 18048 KB Time limit exceeded
63 Halted 0 ms 0 KB -