oj.uz

답안 #793766

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
793766 2023-07-26T06:25:06 Z vjudge1 Tourism (JOI23_tourism) C++17
28 / 100
 5000 ms 13900 KB 
#ifdef Home
#define _GLIBCXX_DEBUG
#endif // Home

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

const int N = 100100;
const int LOGN = 17;

vector < int > adj[N];
int up[N][LOGN], depth[N], use[N], T, ans, C[N];

void dfs(int v, int p) {
    depth[v] = depth[p] + 1;
    up[v][0] = p;
    for(int i = 1; i < LOGN; ++ i) {
        up[v][i] = up[ up[v][i - 1] ][i - 1];
    }
    for(auto &u : adj[v]) {
        if(u != p) {
            dfs(u, v);
        }
    }
}

int slow_LCA(int a, int b) {
    if(depth[a] < depth[b]) {
        swap(a, b);
    }
    ans += use[a] != T;
    ans += use[b] != T;
    use[a] = T;
    use[b] = T;
    for(; depth[a] > depth[b];) {
        a = up[a][0];
        if(use[a] == T) {
            return b;
        }
        ++ ans;
        use[a] = T;
    }
    for(; a != b;) {
        a = up[a][0];
        b = up[b][0];
        if(a == b) {
            use[b] = T;
            ++ ans;
            return a;
        }
        ans += 2;
        use[a] = T;
        use[b] = T;
    }
    return b;
}

main() {
#ifdef Home
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // Home
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    int n, m, q;
    cin >> n >> m >> q;
    for(int i = 1, a, b; i < n; ++ i) {
        cin >> a >> b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    for(int i = 1; i <= m; ++ i) {
        cin >> C[i]; 
    }
    dfs(1, 1);
    for(int l, r, m; q --> 0;) {
        cin >> l >> r;
        ans = 1;
        m = C[l ++];
        use[m] = ++ T;
        for(; l <= r; ++ l) {
            m = slow_LCA(m, C[l]);
        }
        cout << ans << '\n';
    }
}

Compilation message

tourism.cpp:62:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   62 | main() {
      | ^~~~

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 2576 KB Output is correct
3 Correct 2 ms 2656 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2704 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 1 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 1 ms 2644 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 2576 KB Output is correct
3 Correct 2 ms 2656 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2704 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 1 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 1 ms 2644 KB Output is correct
30 Correct 9 ms 2772 KB Output is correct
31 Correct 12 ms 2772 KB Output is correct
32 Correct 18 ms 2916 KB Output is correct
33 Correct 18 ms 2920 KB Output is correct
34 Correct 18 ms 2900 KB Output is correct
35 Correct 25 ms 2920 KB Output is correct
36 Correct 25 ms 2900 KB Output is correct
37 Correct 27 ms 2912 KB Output is correct
38 Correct 25 ms 2980 KB Output is correct
39 Correct 26 ms 2900 KB Output is correct
40 Correct 26 ms 2988 KB Output is correct
41 Correct 37 ms 2996 KB Output is correct
42 Correct 41 ms 2980 KB Output is correct
43 Correct 40 ms 2960 KB Output is correct
44 Correct 27 ms 2900 KB Output is correct
45 Correct 27 ms 2940 KB Output is correct
46 Correct 28 ms 2936 KB Output is correct
47 Correct 37 ms 2900 KB Output is correct
48 Correct 38 ms 2940 KB Output is correct
49 Correct 37 ms 2940 KB Output is correct
50 Correct 10 ms 2900 KB Output is correct
51 Correct 7 ms 2924 KB Output is correct
52 Correct 8 ms 2928 KB Output is correct
53 Correct 7 ms 2900 KB Output is correct
54 Correct 7 ms 2900 KB Output is correct
55 Correct 13 ms 2900 KB Output is correct
56 Correct 10 ms 2704 KB Output is correct
57 Correct 3 ms 2900 KB Output is correct
58 Correct 2 ms 2900 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 1 ms 2644 KB Output is correct
3 Correct 6 ms 2644 KB Output is correct
4 Execution timed out 5030 ms 11528 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 2644 KB Output is correct
2 Correct 37 ms 8724 KB Output is correct
3 Correct 50 ms 9360 KB Output is correct
4 Correct 34 ms 10120 KB Output is correct
5 Correct 58 ms 13644 KB Output is correct
6 Correct 69 ms 13724 KB Output is correct
7 Correct 72 ms 13728 KB Output is correct
8 Correct 66 ms 13720 KB Output is correct
9 Correct 70 ms 13724 KB Output is correct
10 Correct 68 ms 13668 KB Output is correct
11 Correct 65 ms 13640 KB Output is correct
12 Correct 91 ms 13712 KB Output is correct
13 Correct 72 ms 13748 KB Output is correct
14 Correct 83 ms 13748 KB Output is correct
15 Correct 72 ms 13900 KB Output is correct
16 Correct 75 ms 13744 KB Output is correct
17 Correct 68 ms 13756 KB Output is correct
18 Correct 71 ms 13736 KB Output is correct
19 Correct 63 ms 13716 KB Output is correct
20 Correct 59 ms 13696 KB Output is correct
21 Correct 55 ms 13664 KB Output is correct
22 Correct 77 ms 13704 KB Output is correct
23 Correct 73 ms 13588 KB Output is correct
24 Correct 110 ms 13692 KB Output is correct
25 Correct 179 ms 13688 KB Output is correct
26 Correct 211 ms 13704 KB Output is correct
27 Correct 304 ms 13708 KB Output is correct
28 Correct 404 ms 13688 KB Output is correct
29 Correct 522 ms 13772 KB Output is correct
30 Correct 659 ms 13744 KB Output is correct
31 Correct 655 ms 13748 KB Output is correct
32 Correct 694 ms 13740 KB Output is correct
33 Correct 445 ms 13824 KB Output is correct
34 Correct 58 ms 13880 KB Output is correct

Subtask #5
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 7 ms 2708 KB Output is correct
4 Execution timed out 5065 ms 9084 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 2576 KB Output is correct
3 Correct 2 ms 2656 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2704 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 1 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 1 ms 2644 KB Output is correct
30 Correct 9 ms 2772 KB Output is correct
31 Correct 12 ms 2772 KB Output is correct
32 Correct 18 ms 2916 KB Output is correct
33 Correct 18 ms 2920 KB Output is correct
34 Correct 18 ms 2900 KB Output is correct
35 Correct 25 ms 2920 KB Output is correct
36 Correct 25 ms 2900 KB Output is correct
37 Correct 27 ms 2912 KB Output is correct
38 Correct 25 ms 2980 KB Output is correct
39 Correct 26 ms 2900 KB Output is correct
40 Correct 26 ms 2988 KB Output is correct
41 Correct 37 ms 2996 KB Output is correct
42 Correct 41 ms 2980 KB Output is correct
43 Correct 40 ms 2960 KB Output is correct
44 Correct 27 ms 2900 KB Output is correct
45 Correct 27 ms 2940 KB Output is correct
46 Correct 28 ms 2936 KB Output is correct
47 Correct 37 ms 2900 KB Output is correct
48 Correct 38 ms 2940 KB Output is correct
49 Correct 37 ms 2940 KB Output is correct
50 Correct 10 ms 2900 KB Output is correct
51 Correct 7 ms 2924 KB Output is correct
52 Correct 8 ms 2928 KB Output is correct
53 Correct 7 ms 2900 KB Output is correct
54 Correct 7 ms 2900 KB Output is correct
55 Correct 13 ms 2900 KB Output is correct
56 Correct 10 ms 2704 KB Output is correct
57 Correct 3 ms 2900 KB Output is correct
58 Correct 2 ms 2900 KB Output is correct
59 Correct 2 ms 2644 KB Output is correct
60 Correct 1 ms 2644 KB Output is correct
61 Correct 6 ms 2644 KB Output is correct
62 Execution timed out 5030 ms 11528 KB Time limit exceeded
63 Halted 0 ms 0 KB -