oj.uz

답안 #793611

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
793611 2023-07-26T04:38:13 Z vjudge1 Tourism (JOI23_tourism) C++14
10 / 100
 65 ms 7272 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
#define ll long long
using namespace std ;
const int N = 1e5, NS = 2000 ;
bool flag1 ;
bool us[NS + 1] ;
int n, m, q, c[N + 1], l[N + 1], r[N + 1], p[N + 1], dist[N + 1],ind[N + 1], pw[2 * N + 1] ;
vector<int> v[N + 1] ;
vector<pair<int, int>> tree ;
pair<int, int> mn_mx, mn[2 * N + 1][20] ;
void dfs(int city, int last)
{
    ind[city] = tree.size() ;
    tree.push_back({dist[city], city}) ;
    p[city] = last ;
    for(int i : v[city])
    {
        if(i == last)
            continue ;
        dist[i] = dist[city] + 1 ;
        dfs(i, city) ;
        tree.push_back({dist[city], city}) ;
    }
}
void build_lca()
{
    for(int i = 2 ; i <= tree.size() ; i++)
        pw[i] = pw[i / 2] + 1 ;
    for(int i = 0 ; i < tree.size() ; i++)
        mn[i][0] = tree[i] ;
    for(int i = 1 ; i < 20 ; i++)
        for(int j = 0 ; j <= (int)tree.size() - (1 << i) ; j++)
            mn[j][i] = min(mn[j][i - 1], mn[j + (1 << (i - 1))][i - 1]) ;
}
int get_lca(int a, int b)
{
    a = ind[a] ;
    b = ind[b] ;
    if(a > b)
        swap(a, b) ;
    int num = pw[b - a + 1] ;
    return min(mn[a][num], mn[b - (1 << num) + 1][num]).se ;
}
void build_mn_mx()
{
}
signed main()
{
    ios_base::sync_with_stdio( 0 ) ;
    cin.tie( 0 ) ;
    cout.tie( 0 ) ;
    cin >> n >> m >> q ;
    for(int i = 1 ; i < n ; i++)
    {
        int a, b ;
        cin >> a >> b ;
        if(a != i || b != i + 1)flag1 = 1 ;
        v[a].push_back(b) ;
        v[b].push_back(a) ;
    }
    for(int i = 1 ; i <= m ; i++)
        cin >> c[i] ;
    for(int i = 1 ; i <= q ; i++)
        cin >> l[i] >> r[i] ;
    if(n <= 2000 && m <= 2000 && q <= 2000)
    {
        us[0] = 1 ;
        dfs(1, 0) ;
        build_lca() ;
        for(int i = 1 ; i <= q ; i++)
        {
            int ans = 0, lc ;
            lc = c[l[i]] ;
            for(int j = l[i] + 1 ; j <= r[i] ; j++)
                lc = get_lca(lc, c[j]) ;
            for(int j = l[i] ; j <= r[i] ; j++)
            {
                int now = c[j] ;
                while(!us[now])
                {
                    ans++ ;
                    us[now] = 1 ;
                    if(now == lc)
                        break ;
                    now = p[now] ;
                }
            }
            for(int i = 1 ; i <= n ; i++)
                us[i] = 0 ;
            cout << ans << '\n' ;
        }
        return 0 ;
    }
    if(!flag1)
    {
//        build_mx_mn() ;
    }
    return 0 ;
}
//8 8 1
//1 2
//2 3
//3 4
//4 5
//5 6
//6 7
//7 8
//8 6 4 3 5 2 4 7
//3 5

Compilation message

tourism.cpp: In function 'void build_lca()':
tourism.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for(int i = 2 ; i <= tree.size() ; i++)
      |                     ~~^~~~~~~~~~~~~~
tourism.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i = 0 ; i < tree.size() ; i++)
      |                     ~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 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 2 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2688 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 3 ms 2684 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 2 ms 2820 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 3 ms 2772 KB Output is correct
13 Correct 3 ms 2812 KB Output is correct
14 Correct 2 ms 2816 KB Output is correct
15 Correct 2 ms 2820 KB Output is correct
16 Correct 2 ms 2772 KB Output is correct
17 Correct 2 ms 2772 KB Output is correct
18 Correct 2 ms 2772 KB Output is correct
19 Correct 2 ms 2748 KB Output is correct
20 Correct 2 ms 2772 KB Output is correct
21 Correct 2 ms 2812 KB Output is correct
22 Correct 2 ms 2772 KB Output is correct
23 Correct 2 ms 2772 KB Output is correct
24 Correct 3 ms 2924 KB Output is correct
25 Correct 2 ms 2772 KB Output is correct
26 Correct 2 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 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2688 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 3 ms 2684 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 2 ms 2820 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 3 ms 2772 KB Output is correct
13 Correct 3 ms 2812 KB Output is correct
14 Correct 2 ms 2816 KB Output is correct
15 Correct 2 ms 2820 KB Output is correct
16 Correct 2 ms 2772 KB Output is correct
17 Correct 2 ms 2772 KB Output is correct
18 Correct 2 ms 2772 KB Output is correct
19 Correct 2 ms 2748 KB Output is correct
20 Correct 2 ms 2772 KB Output is correct
21 Correct 2 ms 2812 KB Output is correct
22 Correct 2 ms 2772 KB Output is correct
23 Correct 2 ms 2772 KB Output is correct
24 Correct 3 ms 2924 KB Output is correct
25 Correct 2 ms 2772 KB Output is correct
26 Correct 2 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 14 ms 3332 KB Output is correct
31 Correct 20 ms 3336 KB Output is correct
32 Correct 30 ms 3560 KB Output is correct
33 Correct 29 ms 3460 KB Output is correct
34 Correct 30 ms 3572 KB Output is correct
35 Correct 48 ms 3464 KB Output is correct
36 Correct 50 ms 3564 KB Output is correct
37 Correct 48 ms 3540 KB Output is correct
38 Correct 29 ms 3668 KB Output is correct
39 Correct 30 ms 3596 KB Output is correct
40 Correct 26 ms 3668 KB Output is correct
41 Correct 56 ms 3736 KB Output is correct
42 Correct 52 ms 3712 KB Output is correct
43 Correct 65 ms 3668 KB Output is correct
44 Correct 25 ms 3540 KB Output is correct
45 Correct 28 ms 3616 KB Output is correct
46 Correct 26 ms 3648 KB Output is correct
47 Correct 50 ms 3540 KB Output is correct
48 Correct 57 ms 3604 KB Output is correct
49 Correct 52 ms 3640 KB Output is correct
50 Correct 26 ms 3588 KB Output is correct
51 Correct 26 ms 3580 KB Output is correct
52 Correct 29 ms 3600 KB Output is correct
53 Correct 25 ms 3540 KB Output is correct
54 Correct 25 ms 3540 KB Output is correct
55 Correct 25 ms 3576 KB Output is correct
56 Correct 18 ms 2752 KB Output is correct
57 Correct 3 ms 3460 KB Output is correct
58 Correct 3 ms 3540 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 2644 KB Output is correct
3 Correct 18 ms 2732 KB Output is correct
4 Incorrect 28 ms 7272 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Incorrect 16 ms 4604 KB Output isn't correct
3 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 2 ms 2644 KB Output is correct
3 Correct 18 ms 2732 KB Output is correct
4 Incorrect 28 ms 5528 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# 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 2 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2688 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 3 ms 2684 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 2 ms 2820 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 3 ms 2772 KB Output is correct
13 Correct 3 ms 2812 KB Output is correct
14 Correct 2 ms 2816 KB Output is correct
15 Correct 2 ms 2820 KB Output is correct
16 Correct 2 ms 2772 KB Output is correct
17 Correct 2 ms 2772 KB Output is correct
18 Correct 2 ms 2772 KB Output is correct
19 Correct 2 ms 2748 KB Output is correct
20 Correct 2 ms 2772 KB Output is correct
21 Correct 2 ms 2812 KB Output is correct
22 Correct 2 ms 2772 KB Output is correct
23 Correct 2 ms 2772 KB Output is correct
24 Correct 3 ms 2924 KB Output is correct
25 Correct 2 ms 2772 KB Output is correct
26 Correct 2 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 14 ms 3332 KB Output is correct
31 Correct 20 ms 3336 KB Output is correct
32 Correct 30 ms 3560 KB Output is correct
33 Correct 29 ms 3460 KB Output is correct
34 Correct 30 ms 3572 KB Output is correct
35 Correct 48 ms 3464 KB Output is correct
36 Correct 50 ms 3564 KB Output is correct
37 Correct 48 ms 3540 KB Output is correct
38 Correct 29 ms 3668 KB Output is correct
39 Correct 30 ms 3596 KB Output is correct
40 Correct 26 ms 3668 KB Output is correct
41 Correct 56 ms 3736 KB Output is correct
42 Correct 52 ms 3712 KB Output is correct
43 Correct 65 ms 3668 KB Output is correct
44 Correct 25 ms 3540 KB Output is correct
45 Correct 28 ms 3616 KB Output is correct
46 Correct 26 ms 3648 KB Output is correct
47 Correct 50 ms 3540 KB Output is correct
48 Correct 57 ms 3604 KB Output is correct
49 Correct 52 ms 3640 KB Output is correct
50 Correct 26 ms 3588 KB Output is correct
51 Correct 26 ms 3580 KB Output is correct
52 Correct 29 ms 3600 KB Output is correct
53 Correct 25 ms 3540 KB Output is correct
54 Correct 25 ms 3540 KB Output is correct
55 Correct 25 ms 3576 KB Output is correct
56 Correct 18 ms 2752 KB Output is correct
57 Correct 3 ms 3460 KB Output is correct
58 Correct 3 ms 3540 KB Output is correct
59 Correct 2 ms 2644 KB Output is correct
60 Correct 2 ms 2644 KB Output is correct
61 Correct 18 ms 2732 KB Output is correct
62 Incorrect 28 ms 7272 KB Output isn't correct
63 Halted 0 ms 0 KB -