Submission #1513499


Source Code Expand

#include <bits/stdc++.h>

using namespace std;

const int INF = 1145141919;

vector<int> g[100010];
int N, K;
int ans = 0;

int dfs(int cur, vector<int>& used) {
	int res = 0;
	for (int nex : g[cur]) {
		res = max(res, dfs(nex, used) + 1);
	}
	if (cur != 0 && res == K - 1) {
		if (!used[cur]) {
			ans++;
			used[cur] = true;
		}
		res = -1;
	}
	return res;
}

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	cin >> N >> K;
	vector<int> a(N);
	for (int i = 0; i < N; i++) {
		cin >> a[i];
		a[i]--;
	}

	vector<int> used(N, false);
	used[0] = true;
	for (int i = 1; i < N; i++) {
		g[a[i]].push_back(i);
		if (a[i] == 0) used[i] = true;
	}
	dfs(0, used);

	ans += (a[0] != 0);
	cout << ans << endl;
	return 0;
}

Submission Info

Submission Time
Task D - Teleporter
User fine
Language C++14 (GCC 5.4.1)
Score 800
Code Size 770 Byte
Status AC
Exec Time 25 ms
Memory 12800 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 800 / 800
Status
AC × 3
AC × 58
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt, 1_29.txt, 1_30.txt, 1_31.txt, 1_32.txt, 1_33.txt, 1_34.txt, 1_35.txt, 1_36.txt, 1_37.txt, 1_38.txt, 1_39.txt, 1_40.txt, 1_41.txt, 1_42.txt, 1_43.txt, 1_44.txt, 1_45.txt, 1_46.txt, 1_47.txt, 1_48.txt, 1_49.txt, 1_50.txt, 1_51.txt, 1_52.txt, 1_53.txt, 1_54.txt
Case Name Status Exec Time Memory
0_00.txt AC 2 ms 2560 KB
0_01.txt AC 2 ms 2560 KB
0_02.txt AC 2 ms 2560 KB
1_00.txt AC 2 ms 2560 KB
1_01.txt AC 2 ms 2560 KB
1_02.txt AC 25 ms 12800 KB
1_03.txt AC 24 ms 12800 KB
1_04.txt AC 25 ms 12800 KB
1_05.txt AC 24 ms 12800 KB
1_06.txt AC 24 ms 12800 KB
1_07.txt AC 24 ms 12800 KB
1_08.txt AC 24 ms 12800 KB
1_09.txt AC 24 ms 12800 KB
1_10.txt AC 23 ms 9600 KB
1_11.txt AC 24 ms 9600 KB
1_12.txt AC 23 ms 9600 KB
1_13.txt AC 22 ms 6528 KB
1_14.txt AC 22 ms 6528 KB
1_15.txt AC 22 ms 6528 KB
1_16.txt AC 16 ms 5116 KB
1_17.txt AC 15 ms 5116 KB
1_18.txt AC 15 ms 5116 KB
1_19.txt AC 9 ms 4092 KB
1_20.txt AC 9 ms 4092 KB
1_21.txt AC 9 ms 4092 KB
1_22.txt AC 20 ms 4992 KB
1_23.txt AC 20 ms 4992 KB
1_24.txt AC 19 ms 4992 KB
1_25.txt AC 19 ms 4480 KB
1_26.txt AC 18 ms 4480 KB
1_27.txt AC 19 ms 4480 KB
1_28.txt AC 12 ms 4096 KB
1_29.txt AC 12 ms 4096 KB
1_30.txt AC 12 ms 4096 KB
1_31.txt AC 20 ms 4992 KB
1_32.txt AC 20 ms 4992 KB
1_33.txt AC 20 ms 4992 KB
1_34.txt AC 20 ms 4992 KB
1_35.txt AC 21 ms 5376 KB
1_36.txt AC 21 ms 5376 KB
1_37.txt AC 21 ms 5376 KB
1_38.txt AC 21 ms 5376 KB
1_39.txt AC 22 ms 5376 KB
1_40.txt AC 21 ms 5376 KB
1_41.txt AC 21 ms 5376 KB
1_42.txt AC 21 ms 5376 KB
1_43.txt AC 22 ms 5760 KB
1_44.txt AC 21 ms 5760 KB
1_45.txt AC 23 ms 5760 KB
1_46.txt AC 22 ms 5760 KB
1_47.txt AC 22 ms 7296 KB
1_48.txt AC 22 ms 7296 KB
1_49.txt AC 22 ms 7296 KB
1_50.txt AC 23 ms 7296 KB
1_51.txt AC 24 ms 11520 KB
1_52.txt AC 24 ms 11520 KB
1_53.txt AC 24 ms 11520 KB
1_54.txt AC 23 ms 11520 KB