oj.uz

답안 #602038

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
602038 2022-07-22T14:00:56 Z Soumya1 수도 (JOI20_capital_city) C++17
11 / 100
 3000 ms 42960 KB 
#include <bits/stdc++.h>
#ifdef __LOCAL__
  #include <debug_local.h>
#endif
using namespace std;
const int mxN = 2e5 + 5;
vector<int> ad[mxN], l[mxN];
int city[mxN];
int ans = mxN;
int sz[mxN], par[mxN];
bool deleted[mxN], visc[mxN];
vector<int> vec;
void get_size(int u, int p = -1) {
  vec.push_back(u);
  visc[city[u]] = false;
  sz[u] = 1;
  for (int v : ad[u]) {
    if (v == p || deleted[v]) continue;
    get_size(v, u);
    par[v] = u;
    sz[u] += sz[v];
  }
}
int get_centroid(int u, int p, int n) {
  for (int v : ad[u]) {
    if (v == p || deleted[v]) continue;
    if (sz[v] > n / 2) return get_centroid(v, u, n); 
  }
  return u;
}
void solve(int s) {
  get_size(s);
  int c = get_centroid(s, -1, sz[s]);
  vec.clear();
  get_size(c);
  sort(vec.begin(), vec.end());
  int cur = 0;
  queue<int> q;
  visc[city[c]] = true;
  q.push(city[c]);
  while (!q.empty()) {
    cur++;
    int u = q.front();
    q.pop();
    for (int v : l[u]) {
      if (!binary_search(vec.begin(), vec.end(), v)) cur = mxN;
      else {
        if (v != c && !visc[city[par[v]]]) {
          q.push(city[par[v]]);
          visc[city[par[v]]] = true;
        }
      }
    }
  }
  ans = min(ans, cur);
  deleted[c] = true;
  for (int v : ad[c]) {
    if (!deleted[v]) solve(v);
  }
}
void testCase() {
  int n, k;
  cin >> n >> k;
  for (int i = 1; i < n; i++) {
    int u, v;
    cin >> u >> v;
    ad[u].push_back(v);
    ad[v].push_back(u);
  }
  for (int i = 1; i <= n; i++) {
    cin >> city[i];
    l[city[i]].push_back(i);
  }
  solve(1);
  cout << ans - 1 << "\n";
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  testCase();
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9660 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 5 ms 9748 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 5 ms 9728 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9724 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9660 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 5 ms 9748 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 5 ms 9728 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9724 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 8 ms 9904 KB Output is correct
12 Correct 8 ms 9812 KB Output is correct
13 Correct 8 ms 9812 KB Output is correct
14 Correct 8 ms 9812 KB Output is correct
15 Correct 8 ms 9940 KB Output is correct
16 Correct 8 ms 9812 KB Output is correct
17 Correct 12 ms 9940 KB Output is correct
18 Correct 12 ms 9940 KB Output is correct
19 Correct 11 ms 9980 KB Output is correct
20 Correct 13 ms 9984 KB Output is correct
21 Correct 12 ms 9984 KB Output is correct
22 Correct 7 ms 10012 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9940 KB Output is correct
25 Correct 9 ms 9908 KB Output is correct
26 Correct 11 ms 9940 KB Output is correct
27 Correct 9 ms 9940 KB Output is correct
28 Correct 10 ms 9940 KB Output is correct
29 Correct 10 ms 9932 KB Output is correct
30 Correct 10 ms 9940 KB Output is correct

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 706 ms 38884 KB Output is correct
2 Correct 305 ms 39264 KB Output is correct
3 Correct 626 ms 42224 KB Output is correct
4 Correct 300 ms 42960 KB Output is correct
5 Correct 1654 ms 39240 KB Output is correct
6 Correct 361 ms 42924 KB Output is correct
7 Execution timed out 3079 ms 39560 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 59.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9660 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 5 ms 9748 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 5 ms 9728 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9724 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 8 ms 9904 KB Output is correct
12 Correct 8 ms 9812 KB Output is correct
13 Correct 8 ms 9812 KB Output is correct
14 Correct 8 ms 9812 KB Output is correct
15 Correct 8 ms 9940 KB Output is correct
16 Correct 8 ms 9812 KB Output is correct
17 Correct 12 ms 9940 KB Output is correct
18 Correct 12 ms 9940 KB Output is correct
19 Correct 11 ms 9980 KB Output is correct
20 Correct 13 ms 9984 KB Output is correct
21 Correct 12 ms 9984 KB Output is correct
22 Correct 7 ms 10012 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9940 KB Output is correct
25 Correct 9 ms 9908 KB Output is correct
26 Correct 11 ms 9940 KB Output is correct
27 Correct 9 ms 9940 KB Output is correct
28 Correct 10 ms 9940 KB Output is correct
29 Correct 10 ms 9932 KB Output is correct
30 Correct 10 ms 9940 KB Output is correct
31 Correct 706 ms 38884 KB Output is correct
32 Correct 305 ms 39264 KB Output is correct
33 Correct 626 ms 42224 KB Output is correct
34 Correct 300 ms 42960 KB Output is correct
35 Correct 1654 ms 39240 KB Output is correct
36 Correct 361 ms 42924 KB Output is correct
37 Execution timed out 3079 ms 39560 KB Time limit exceeded
38 Halted 0 ms 0 KB -