oj.uz

답안 #236031

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
236031 2020-05-30T22:37:55 Z JustasZ Tax Evasion (LMIO19_mokesciai) C++14
100 / 100
 126 ms 28396 KB 
/*input
7 2
1
2
3
3
5
6
3 4
*/
#include <bits/stdc++.h>
#define pb push_back
#define x first
#define y second
#define all(a) a.begin(), a.end()
#define sz(a) (int)a.size()
#define rd() abs((int)rng())
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<int, int>;
const int maxn = 2e5 + 100;
const int mod = 1e9 + 7;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
int n, m, has[maxn], dep[maxn], need[maxn], cnt[maxn], par[maxn];
vector<int>stk, ord;
vector<int>adj[maxn];
void prep(int v) {
	stk.pb(v);
	if (has[v]) {
		++need[stk[dep[v] / 2 + 1]];
	}
	for (int to : adj[v]) {
		prep(to);
	}
	stk.pop_back();
}
bool can(int min_dep) {
	for (int v : ord) {
		if (dep[v] >= min_dep) {
			cnt[v]--;
		}
		if (cnt[v] > 0) {
			return false;
		}
		cnt[par[v]] += cnt[v];
	}
	return true;
}
int main()
{
	ios_base::sync_with_stdio(false), cin.tie(0);
	cin >> n >> m;
	for (int i = 2; i <= n; i++) {
		int p;
		cin >> p;
		dep[i] = dep[p] + 1;
		par[i] = p;
		adj[p].pb(i);
	}

	for (int i = 1; i <= m; i++) {
		int v;
		cin >> v;
		has[v] = 1;
	}

	for (int i = 1; i <= n; i++) {
		ord.pb(i);
	}
	sort(all(ord), [&](int i, int j) {
		return dep[i] > dep[j];
	});

	prep(1);
	int lo = 0, hi = n - 1;
	while (lo < hi) {
		int mid = (lo + hi + 1) / 2;

		for (int i = 1; i <= n; i++) {
			cnt[i] = need[i];
		}

		if (can(mid)) {
			lo = mid;
		} else {
			hi = mid - 1;
		}
	}

	cout << lo + 1 << "\n";
	return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 9 ms 5632 KB Output is correct
4 Correct 9 ms 5632 KB Output is correct
5 Correct 9 ms 5632 KB Output is correct
6 Correct 81 ms 26092 KB Output is correct
7 Correct 79 ms 26092 KB Output is correct
8 Correct 9 ms 5632 KB Output is correct
9 Correct 99 ms 28136 KB Output is correct
10 Correct 102 ms 28396 KB Output is correct
11 Correct 92 ms 27244 KB Output is correct

Subtask #2
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 8 ms 5376 KB Output is correct
3 Correct 8 ms 5376 KB Output is correct
4 Correct 9 ms 5300 KB Output is correct
5 Correct 11 ms 5376 KB Output is correct
6 Correct 8 ms 5248 KB Output is correct
7 Correct 81 ms 26092 KB Output is correct
8 Correct 79 ms 26092 KB Output is correct
9 Correct 9 ms 5632 KB Output is correct
10 Correct 78 ms 18072 KB Output is correct
11 Correct 76 ms 18072 KB Output is correct
12 Correct 85 ms 11620 KB Output is correct
13 Correct 83 ms 19536 KB Output is correct
14 Correct 76 ms 12652 KB Output is correct
15 Correct 79 ms 11756 KB Output is correct
16 Correct 85 ms 19564 KB Output is correct
17 Correct 126 ms 12756 KB Output is correct
18 Correct 82 ms 22252 KB Output is correct
19 Correct 81 ms 16492 KB Output is correct
20 Correct 75 ms 15984 KB Output is correct
21 Correct 77 ms 15980 KB Output is correct
22 Correct 78 ms 15980 KB Output is correct
23 Correct 78 ms 15600 KB Output is correct
24 Correct 72 ms 15860 KB Output is correct

Subtask #3
39.0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5120 KB Output is correct
5 Correct 7 ms 5120 KB Output is correct
6 Correct 8 ms 5376 KB Output is correct
7 Correct 9 ms 5376 KB Output is correct
8 Correct 9 ms 5376 KB Output is correct
9 Correct 9 ms 5248 KB Output is correct
10 Correct 9 ms 5248 KB Output is correct
11 Correct 9 ms 5504 KB Output is correct
12 Correct 9 ms 5248 KB Output is correct
13 Correct 9 ms 5376 KB Output is correct
14 Correct 9 ms 5376 KB Output is correct
15 Correct 9 ms 5504 KB Output is correct
16 Correct 9 ms 5504 KB Output is correct
17 Correct 9 ms 5376 KB Output is correct
18 Correct 9 ms 5504 KB Output is correct
19 Correct 9 ms 5376 KB Output is correct
20 Correct 8 ms 5376 KB Output is correct
21 Correct 8 ms 5376 KB Output is correct
22 Correct 7 ms 5120 KB Output is correct
23 Correct 7 ms 5120 KB Output is correct
24 Correct 9 ms 5632 KB Output is correct
25 Correct 9 ms 5632 KB Output is correct
26 Correct 9 ms 5632 KB Output is correct
27 Correct 8 ms 5120 KB Output is correct
28 Correct 8 ms 5376 KB Output is correct
29 Correct 8 ms 5376 KB Output is correct
30 Correct 9 ms 5300 KB Output is correct
31 Correct 11 ms 5376 KB Output is correct
32 Correct 8 ms 5248 KB Output is correct
33 Correct 9 ms 5632 KB Output is correct

Subtask #4
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5120 KB Output is correct
5 Correct 7 ms 5120 KB Output is correct
6 Correct 8 ms 5376 KB Output is correct
7 Correct 9 ms 5376 KB Output is correct
8 Correct 9 ms 5376 KB Output is correct
9 Correct 9 ms 5248 KB Output is correct
10 Correct 9 ms 5248 KB Output is correct
11 Correct 9 ms 5504 KB Output is correct
12 Correct 9 ms 5248 KB Output is correct
13 Correct 9 ms 5376 KB Output is correct
14 Correct 9 ms 5376 KB Output is correct
15 Correct 9 ms 5504 KB Output is correct
16 Correct 9 ms 5504 KB Output is correct
17 Correct 9 ms 5376 KB Output is correct
18 Correct 9 ms 5504 KB Output is correct
19 Correct 9 ms 5376 KB Output is correct
20 Correct 8 ms 5376 KB Output is correct
21 Correct 8 ms 5376 KB Output is correct
22 Correct 7 ms 5120 KB Output is correct
23 Correct 7 ms 5120 KB Output is correct
24 Correct 9 ms 5632 KB Output is correct
25 Correct 9 ms 5632 KB Output is correct
26 Correct 9 ms 5632 KB Output is correct
27 Correct 8 ms 5120 KB Output is correct
28 Correct 8 ms 5376 KB Output is correct
29 Correct 8 ms 5376 KB Output is correct
30 Correct 9 ms 5300 KB Output is correct
31 Correct 11 ms 5376 KB Output is correct
32 Correct 8 ms 5248 KB Output is correct
33 Correct 81 ms 26092 KB Output is correct
34 Correct 79 ms 26092 KB Output is correct
35 Correct 9 ms 5632 KB Output is correct
36 Correct 78 ms 18072 KB Output is correct
37 Correct 76 ms 18072 KB Output is correct
38 Correct 85 ms 11620 KB Output is correct
39 Correct 83 ms 19536 KB Output is correct
40 Correct 76 ms 12652 KB Output is correct
41 Correct 79 ms 11756 KB Output is correct
42 Correct 85 ms 19564 KB Output is correct
43 Correct 126 ms 12756 KB Output is correct
44 Correct 82 ms 22252 KB Output is correct
45 Correct 81 ms 16492 KB Output is correct
46 Correct 75 ms 15984 KB Output is correct
47 Correct 77 ms 15980 KB Output is correct
48 Correct 78 ms 15980 KB Output is correct
49 Correct 78 ms 15600 KB Output is correct
50 Correct 72 ms 15860 KB Output is correct
51 Correct 99 ms 28136 KB Output is correct
52 Correct 102 ms 28396 KB Output is correct
53 Correct 92 ms 27244 KB Output is correct
54 Correct 81 ms 18712 KB Output is correct
55 Correct 81 ms 18712 KB Output is correct
56 Correct 85 ms 19692 KB Output is correct
57 Correct 86 ms 13548 KB Output is correct
58 Correct 71 ms 11624 KB Output is correct
59 Correct 95 ms 17268 KB Output is correct
60 Correct 79 ms 13676 KB Output is correct
61 Correct 110 ms 21868 KB Output is correct
62 Correct 118 ms 14440 KB Output is correct
63 Correct 90 ms 23660 KB Output is correct
64 Correct 84 ms 17772 KB Output is correct
65 Correct 85 ms 17264 KB Output is correct
66 Correct 85 ms 17644 KB Output is correct
67 Correct 92 ms 17644 KB Output is correct
68 Correct 94 ms 16624 KB Output is correct
69 Correct 91 ms 17776 KB Output is correct
70 Correct 55 ms 10096 KB Output is correct
71 Correct 83 ms 19184 KB Output is correct