oj.uz

답안 #797865

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
797865 2023-07-30T04:03:22 Z 1bin Cat Exercise (JOI23_ho_t4) C++14
100 / 100
 210 ms 61852 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 2e5 + 5;
ll n, h[NMAX], a, b, lv[NMAX], p[NMAX][18], par[NMAX], dp[NMAX];
vector<int> adj[NMAX];
int find(int x){return par[x] == -1 ? x : par[x] = find(par[x]);}

void dfs(int x, int par){
    for(int& nx : adj[x]){
        if(nx == par) continue;
        p[nx][0] = x;
        lv[nx] = lv[x] + 1;
        dfs(nx, x);
    }    
    return;
}

int dist(int a, int b){
    int ret = 0;
    if(lv[a] < lv[b]) swap(a, b);
    for(int i = 17; i >= 0; i--)
        if(lv[a] - lv[b] >= 1 << i){
            a = p[a][i];
            ret += 1 << i;
        }
    if(a == b) return ret;
    for(int i = 17; i >= 0; i--)
        if(p[a][i] != p[b][i]){
            a = p[a][i];
            b = p[b][i];
            ret += 1 << (i + 1);
        }
    return ret + 2;
}

int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    cin >> n;
    for(int i = 1; i <= n; i++) cin >> h[i];
    for(int i = 1; i < n; i++){
        cin >> a >> b;
        adj[h[a]].emplace_back(h[b]);
        adj[h[b]].emplace_back(h[a]);
    }
    dfs(1, -1);
    for(int j = 1; j < 18; j++)
        for(int i = 1; i <= n; i++)
            p[i][j] = p[p[i][j - 1]][j - 1];
    memset(par, -1, sizeof(par));
    for(int i = 1; i <= n; i++){
        for(int j : adj[i]){
            j = find(j);
            if(j > i) continue;
            dp[i] = max(dp[i], dp[j] + dist(i, j));
            par[j] = i;
        }
    }
    cout << dp[n];
    return 0;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 3 ms 6612 KB Output is correct
3 Correct 3 ms 6484 KB Output is correct
4 Correct 3 ms 6612 KB Output is correct
5 Correct 3 ms 6568 KB Output is correct
6 Correct 3 ms 6612 KB Output is correct
7 Correct 4 ms 6612 KB Output is correct
8 Correct 3 ms 6568 KB Output is correct
9 Correct 3 ms 6564 KB Output is correct
10 Correct 3 ms 6612 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 3 ms 6612 KB Output is correct
3 Correct 3 ms 6484 KB Output is correct
4 Correct 3 ms 6612 KB Output is correct
5 Correct 3 ms 6568 KB Output is correct
6 Correct 3 ms 6612 KB Output is correct
7 Correct 4 ms 6612 KB Output is correct
8 Correct 3 ms 6568 KB Output is correct
9 Correct 3 ms 6564 KB Output is correct
10 Correct 3 ms 6612 KB Output is correct
11 Correct 3 ms 6612 KB Output is correct
12 Correct 3 ms 6612 KB Output is correct
13 Correct 3 ms 6612 KB Output is correct
14 Correct 3 ms 6612 KB Output is correct
15 Correct 3 ms 6564 KB Output is correct
16 Correct 3 ms 6612 KB Output is correct
17 Correct 3 ms 6688 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 3 ms 6612 KB Output is correct
3 Correct 3 ms 6484 KB Output is correct
4 Correct 3 ms 6612 KB Output is correct
5 Correct 3 ms 6568 KB Output is correct
6 Correct 3 ms 6612 KB Output is correct
7 Correct 4 ms 6612 KB Output is correct
8 Correct 3 ms 6568 KB Output is correct
9 Correct 3 ms 6564 KB Output is correct
10 Correct 3 ms 6612 KB Output is correct
11 Correct 3 ms 6612 KB Output is correct
12 Correct 3 ms 6612 KB Output is correct
13 Correct 3 ms 6612 KB Output is correct
14 Correct 3 ms 6612 KB Output is correct
15 Correct 3 ms 6564 KB Output is correct
16 Correct 3 ms 6612 KB Output is correct
17 Correct 3 ms 6688 KB Output is correct
18 Correct 5 ms 7764 KB Output is correct
19 Correct 5 ms 7892 KB Output is correct
20 Correct 5 ms 7856 KB Output is correct
21 Correct 5 ms 7800 KB Output is correct
22 Correct 5 ms 7856 KB Output is correct
23 Correct 5 ms 7800 KB Output is correct
24 Correct 5 ms 7856 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 3 ms 6612 KB Output is correct
3 Correct 3 ms 6484 KB Output is correct
4 Correct 3 ms 6612 KB Output is correct
5 Correct 3 ms 6568 KB Output is correct
6 Correct 3 ms 6612 KB Output is correct
7 Correct 4 ms 6612 KB Output is correct
8 Correct 3 ms 6568 KB Output is correct
9 Correct 3 ms 6564 KB Output is correct
10 Correct 3 ms 6612 KB Output is correct
11 Correct 3 ms 6612 KB Output is correct
12 Correct 3 ms 6612 KB Output is correct
13 Correct 3 ms 6612 KB Output is correct
14 Correct 3 ms 6612 KB Output is correct
15 Correct 3 ms 6564 KB Output is correct
16 Correct 3 ms 6612 KB Output is correct
17 Correct 3 ms 6688 KB Output is correct
18 Correct 5 ms 7764 KB Output is correct
19 Correct 5 ms 7892 KB Output is correct
20 Correct 5 ms 7856 KB Output is correct
21 Correct 5 ms 7800 KB Output is correct
22 Correct 5 ms 7856 KB Output is correct
23 Correct 5 ms 7800 KB Output is correct
24 Correct 5 ms 7856 KB Output is correct
25 Correct 3 ms 6568 KB Output is correct
26 Correct 5 ms 7764 KB Output is correct
27 Correct 5 ms 7792 KB Output is correct
28 Correct 6 ms 7812 KB Output is correct
29 Correct 7 ms 7784 KB Output is correct
30 Correct 5 ms 7636 KB Output is correct
31 Correct 5 ms 7600 KB Output is correct
32 Correct 5 ms 7636 KB Output is correct
33 Correct 5 ms 7544 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 3 ms 6612 KB Output is correct
3 Correct 3 ms 6484 KB Output is correct
4 Correct 3 ms 6612 KB Output is correct
5 Correct 3 ms 6568 KB Output is correct
6 Correct 3 ms 6612 KB Output is correct
7 Correct 4 ms 6612 KB Output is correct
8 Correct 3 ms 6568 KB Output is correct
9 Correct 3 ms 6564 KB Output is correct
10 Correct 3 ms 6612 KB Output is correct
11 Correct 3 ms 6612 KB Output is correct
12 Correct 3 ms 6612 KB Output is correct
13 Correct 3 ms 6612 KB Output is correct
14 Correct 3 ms 6612 KB Output is correct
15 Correct 3 ms 6564 KB Output is correct
16 Correct 3 ms 6612 KB Output is correct
17 Correct 3 ms 6688 KB Output is correct
18 Correct 5 ms 7764 KB Output is correct
19 Correct 5 ms 7892 KB Output is correct
20 Correct 5 ms 7856 KB Output is correct
21 Correct 5 ms 7800 KB Output is correct
22 Correct 5 ms 7856 KB Output is correct
23 Correct 5 ms 7800 KB Output is correct
24 Correct 5 ms 7856 KB Output is correct
25 Correct 124 ms 55756 KB Output is correct
26 Correct 124 ms 61836 KB Output is correct
27 Correct 138 ms 61852 KB Output is correct
28 Correct 174 ms 61320 KB Output is correct
29 Correct 206 ms 55776 KB Output is correct
30 Correct 181 ms 59796 KB Output is correct
31 Correct 171 ms 58640 KB Output is correct

Subtask #6
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 3 ms 6612 KB Output is correct
3 Correct 210 ms 49280 KB Output is correct
4 Correct 167 ms 49356 KB Output is correct
5 Correct 183 ms 49380 KB Output is correct

Subtask #7
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 3 ms 6612 KB Output is correct
3 Correct 3 ms 6484 KB Output is correct
4 Correct 3 ms 6612 KB Output is correct
5 Correct 3 ms 6568 KB Output is correct
6 Correct 3 ms 6612 KB Output is correct
7 Correct 4 ms 6612 KB Output is correct
8 Correct 3 ms 6568 KB Output is correct
9 Correct 3 ms 6564 KB Output is correct
10 Correct 3 ms 6612 KB Output is correct
11 Correct 3 ms 6612 KB Output is correct
12 Correct 3 ms 6612 KB Output is correct
13 Correct 3 ms 6612 KB Output is correct
14 Correct 3 ms 6612 KB Output is correct
15 Correct 3 ms 6564 KB Output is correct
16 Correct 3 ms 6612 KB Output is correct
17 Correct 3 ms 6688 KB Output is correct
18 Correct 5 ms 7764 KB Output is correct
19 Correct 5 ms 7892 KB Output is correct
20 Correct 5 ms 7856 KB Output is correct
21 Correct 5 ms 7800 KB Output is correct
22 Correct 5 ms 7856 KB Output is correct
23 Correct 5 ms 7800 KB Output is correct
24 Correct 5 ms 7856 KB Output is correct
25 Correct 3 ms 6568 KB Output is correct
26 Correct 5 ms 7764 KB Output is correct
27 Correct 5 ms 7792 KB Output is correct
28 Correct 6 ms 7812 KB Output is correct
29 Correct 7 ms 7784 KB Output is correct
30 Correct 5 ms 7636 KB Output is correct
31 Correct 5 ms 7600 KB Output is correct
32 Correct 5 ms 7636 KB Output is correct
33 Correct 5 ms 7544 KB Output is correct
34 Correct 124 ms 55756 KB Output is correct
35 Correct 124 ms 61836 KB Output is correct
36 Correct 138 ms 61852 KB Output is correct
37 Correct 174 ms 61320 KB Output is correct
38 Correct 206 ms 55776 KB Output is correct
39 Correct 181 ms 59796 KB Output is correct
40 Correct 171 ms 58640 KB Output is correct
41 Correct 3 ms 6484 KB Output is correct
42 Correct 3 ms 6612 KB Output is correct
43 Correct 210 ms 49280 KB Output is correct
44 Correct 167 ms 49356 KB Output is correct
45 Correct 183 ms 49380 KB Output is correct
46 Correct 166 ms 58188 KB Output is correct
47 Correct 150 ms 58180 KB Output is correct
48 Correct 145 ms 58212 KB Output is correct
49 Correct 140 ms 58252 KB Output is correct
50 Correct 186 ms 49508 KB Output is correct
51 Correct 186 ms 49484 KB Output is correct
52 Correct 193 ms 49748 KB Output is correct
53 Correct 193 ms 49572 KB Output is correct