oj.uz

답안 #941341

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
941341 2024-03-08T15:18:58 Z a_l_i_r_e_z_a 수도 (JOI20_capital_city) C++17
100 / 100
 404 ms 38852 KB 
// In the name of God
// Hope is last to die
 
#include <bits/stdc++.h>
using namespace std;
 
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2")
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
#define pb push_back
// #define int long long
#define S second
#define F first
#define mp make_pair
#define smax(x, y) (x) = max((x), (y))
#define smin(x, y) (x) = min((x), (y))
#define all(x) (x).begin(), (x).end()
 
const int maxn = 2e5 + 5;
const int inf = 1e9 + 7;
int n, k, a[maxn], sz[maxn], par[maxn], id[maxn];
vector<int> adj[maxn], vec[maxn];
bool mark[maxn], vis[maxn];
queue<int> q;

int get_sz(int v, int p = -1){
    sz[v] = 1;
    for(auto u: adj[v]){
        if(u != p && !mark[u]) sz[v] += get_sz(u, v);
    }
    return sz[v];
}

int find(int v, int p, int s){
    for(auto u: adj[v]){
        if(u != p && !mark[u] && sz[u] * 2 > s) return find(u, v, s);
    }
    return v;
}

void dfs(int v, int p, int r){
    vis[a[v]] = 0;
    par[v] = p;
    id[v] = r;
    for(auto u: adj[v]){
        if(u != p && !mark[u]) dfs(u, v, r);
    }
}

int centroid_decompose(int v){
    v = find(v, 0, get_sz(v));
    dfs(v, v, v);
    q.push(a[v]);
    int ans = 0;
    while(q.size()){
        int c = q.front();
        q.pop();
        if(vis[c]) continue;
        vis[c] = 1;
        for(auto u: vec[c]){
            if(id[u] != v){
                ans = k;
                break;
            }
            q.push(a[par[u]]);
        }
        ans++;
    }
    mark[v] = 1;
    for(auto u: adj[v]) if(!mark[u]) smin(ans, centroid_decompose(u));
    return ans;
}

int32_t main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> n >> k;
    for(int i = 0; i < n - 1; i++){
        int u, v; cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        vec[a[i]].pb(i);
    }
    cout << centroid_decompose(1) - 1 << '\n';

    return 0;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 3 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12632 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 2 ms 12632 KB Output is correct
8 Correct 2 ms 12636 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 2 ms 12724 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 3 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12632 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 2 ms 12632 KB Output is correct
8 Correct 2 ms 12636 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 2 ms 12724 KB Output is correct
11 Correct 4 ms 12632 KB Output is correct
12 Correct 3 ms 12636 KB Output is correct
13 Correct 3 ms 12636 KB Output is correct
14 Correct 3 ms 12728 KB Output is correct
15 Correct 3 ms 12892 KB Output is correct
16 Correct 3 ms 12636 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 4 ms 12736 KB Output is correct
19 Correct 3 ms 12892 KB Output is correct
20 Correct 3 ms 12892 KB Output is correct
21 Correct 5 ms 12892 KB Output is correct
22 Correct 3 ms 12892 KB Output is correct
23 Correct 3 ms 12724 KB Output is correct
24 Correct 3 ms 12888 KB Output is correct
25 Correct 3 ms 12892 KB Output is correct
26 Correct 4 ms 12892 KB Output is correct
27 Correct 4 ms 12892 KB Output is correct
28 Correct 4 ms 12892 KB Output is correct
29 Correct 4 ms 12892 KB Output is correct
30 Correct 4 ms 12732 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 324 ms 38228 KB Output is correct
2 Correct 138 ms 38852 KB Output is correct
3 Correct 294 ms 37972 KB Output is correct
4 Correct 132 ms 38740 KB Output is correct
5 Correct 298 ms 35784 KB Output is correct
6 Correct 128 ms 38736 KB Output is correct
7 Correct 261 ms 35828 KB Output is correct
8 Correct 132 ms 38496 KB Output is correct
9 Correct 362 ms 34548 KB Output is correct
10 Correct 323 ms 32852 KB Output is correct
11 Correct 340 ms 34900 KB Output is correct
12 Correct 349 ms 37204 KB Output is correct
13 Correct 309 ms 32080 KB Output is correct
14 Correct 328 ms 37292 KB Output is correct
15 Correct 317 ms 36948 KB Output is correct
16 Correct 323 ms 32988 KB Output is correct
17 Correct 344 ms 33344 KB Output is correct
18 Correct 328 ms 33532 KB Output is correct
19 Correct 352 ms 35916 KB Output is correct
20 Correct 324 ms 37968 KB Output is correct
21 Correct 3 ms 12636 KB Output is correct

Subtask #4
59.0 / 59.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 3 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12632 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 2 ms 12632 KB Output is correct
8 Correct 2 ms 12636 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 2 ms 12724 KB Output is correct
11 Correct 4 ms 12632 KB Output is correct
12 Correct 3 ms 12636 KB Output is correct
13 Correct 3 ms 12636 KB Output is correct
14 Correct 3 ms 12728 KB Output is correct
15 Correct 3 ms 12892 KB Output is correct
16 Correct 3 ms 12636 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 4 ms 12736 KB Output is correct
19 Correct 3 ms 12892 KB Output is correct
20 Correct 3 ms 12892 KB Output is correct
21 Correct 5 ms 12892 KB Output is correct
22 Correct 3 ms 12892 KB Output is correct
23 Correct 3 ms 12724 KB Output is correct
24 Correct 3 ms 12888 KB Output is correct
25 Correct 3 ms 12892 KB Output is correct
26 Correct 4 ms 12892 KB Output is correct
27 Correct 4 ms 12892 KB Output is correct
28 Correct 4 ms 12892 KB Output is correct
29 Correct 4 ms 12892 KB Output is correct
30 Correct 4 ms 12732 KB Output is correct
31 Correct 324 ms 38228 KB Output is correct
32 Correct 138 ms 38852 KB Output is correct
33 Correct 294 ms 37972 KB Output is correct
34 Correct 132 ms 38740 KB Output is correct
35 Correct 298 ms 35784 KB Output is correct
36 Correct 128 ms 38736 KB Output is correct
37 Correct 261 ms 35828 KB Output is correct
38 Correct 132 ms 38496 KB Output is correct
39 Correct 362 ms 34548 KB Output is correct
40 Correct 323 ms 32852 KB Output is correct
41 Correct 340 ms 34900 KB Output is correct
42 Correct 349 ms 37204 KB Output is correct
43 Correct 309 ms 32080 KB Output is correct
44 Correct 328 ms 37292 KB Output is correct
45 Correct 317 ms 36948 KB Output is correct
46 Correct 323 ms 32988 KB Output is correct
47 Correct 344 ms 33344 KB Output is correct
48 Correct 328 ms 33532 KB Output is correct
49 Correct 352 ms 35916 KB Output is correct
50 Correct 324 ms 37968 KB Output is correct
51 Correct 3 ms 12636 KB Output is correct
52 Correct 190 ms 25172 KB Output is correct
53 Correct 208 ms 25024 KB Output is correct
54 Correct 210 ms 25172 KB Output is correct
55 Correct 214 ms 25236 KB Output is correct
56 Correct 212 ms 25252 KB Output is correct
57 Correct 232 ms 25252 KB Output is correct
58 Correct 198 ms 27732 KB Output is correct
59 Correct 193 ms 27988 KB Output is correct
60 Correct 243 ms 27916 KB Output is correct
61 Correct 237 ms 27424 KB Output is correct
62 Correct 161 ms 38660 KB Output is correct
63 Correct 135 ms 38668 KB Output is correct
64 Correct 124 ms 38420 KB Output is correct
65 Correct 125 ms 38736 KB Output is correct
66 Correct 208 ms 32196 KB Output is correct
67 Correct 167 ms 31948 KB Output is correct
68 Correct 172 ms 32136 KB Output is correct
69 Correct 170 ms 32252 KB Output is correct
70 Correct 164 ms 32164 KB Output is correct
71 Correct 166 ms 32080 KB Output is correct
72 Correct 165 ms 32164 KB Output is correct
73 Correct 192 ms 31688 KB Output is correct
74 Correct 171 ms 32200 KB Output is correct
75 Correct 161 ms 32136 KB Output is correct
76 Correct 259 ms 31060 KB Output is correct
77 Correct 247 ms 29320 KB Output is correct
78 Correct 327 ms 33616 KB Output is correct
79 Correct 304 ms 31576 KB Output is correct
80 Correct 340 ms 37444 KB Output is correct
81 Correct 317 ms 34616 KB Output is correct
82 Correct 322 ms 34644 KB Output is correct
83 Correct 330 ms 32292 KB Output is correct
84 Correct 404 ms 36760 KB Output is correct
85 Correct 362 ms 35412 KB Output is correct
86 Correct 359 ms 31580 KB Output is correct
87 Correct 335 ms 33104 KB Output is correct
88 Correct 298 ms 34032 KB Output is correct
89 Correct 342 ms 30844 KB Output is correct
90 Correct 293 ms 30800 KB Output is correct
91 Correct 328 ms 32720 KB Output is correct
92 Correct 304 ms 31312 KB Output is correct
93 Correct 291 ms 31384 KB Output is correct
94 Correct 284 ms 30804 KB Output is correct
95 Correct 280 ms 32084 KB Output is correct
96 Correct 283 ms 30628 KB Output is correct
97 Correct 269 ms 32604 KB Output is correct