Submission #1074390


Source Code Expand

#include <bits/stdc++.h>

using namespace std;

int main() {
	int n;
	cin >> n;

	vector<int> Beaten(n);
	vector<int> Beats(n);
	vector<int> H(n);

	for(int i = 1; i < n; ++i) {
		cin >> Beaten[i];
		Beaten[i] -= 1;
		Beats[Beaten[i]] += 1;
	}

	cerr << "OK" << endl;

	auto cmp = [&](int a, int b) {
		return H[a] < H[b];
	};
	priority_queue<int, vector<int>, decltype(cmp)> Q(cmp);

	for(int i = 0; i < n; ++i) {
		if(Beats[i] == 0) {
			Q.push(i);
		}
	}

	for(int i = 1; i < n; ++i) {
		int top = Q.top();
		Q.pop();

		int par = Beaten[top];
		
		if(H[par] < H[top]) 
			H[par] = H[top];
		H[par] += 1;
		
		if(--Beats[par] == 0)
			Q.push(par);
	}

	assert(Beats[0] == 0);
	assert(Q.top() == 0);
	for(int i = 1; i < n; ++i)
		assert(H[0] > H[i]);

	cout << H[0] << endl;

	return 0;
}

Submission Info

Submission Time
Task B - Tournament
User retrograd
Language C++14 (GCC 5.4.1)
Score 0
Code Size 843 Byte
Status WA
Exec Time 44 ms
Memory 2172 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 800
Status
AC × 2
WA × 1
AC × 16
WA × 37
Set Name Test Cases
Sample s1.txt, s2.txt, s3.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, s1.txt, s2.txt, s3.txt
Case Name Status Exec Time Memory
01.txt WA 43 ms 1792 KB
02.txt WA 43 ms 1792 KB
03.txt WA 44 ms 1792 KB
04.txt WA 43 ms 1792 KB
05.txt WA 43 ms 1792 KB
06.txt WA 43 ms 1792 KB
07.txt WA 43 ms 1792 KB
08.txt WA 43 ms 1792 KB
09.txt WA 43 ms 1792 KB
10.txt WA 43 ms 1792 KB
11.txt AC 33 ms 1408 KB
12.txt WA 36 ms 1664 KB
13.txt WA 38 ms 1664 KB
14.txt WA 40 ms 1664 KB
15.txt WA 41 ms 1792 KB
16.txt WA 42 ms 1792 KB
17.txt WA 42 ms 1792 KB
18.txt WA 42 ms 1792 KB
19.txt WA 43 ms 1792 KB
20.txt AC 43 ms 1792 KB
21.txt AC 34 ms 2044 KB
22.txt WA 35 ms 2044 KB
23.txt WA 35 ms 2044 KB
24.txt WA 34 ms 2044 KB
25.txt AC 34 ms 2172 KB
26.txt WA 32 ms 2044 KB
27.txt WA 33 ms 2044 KB
28.txt WA 33 ms 2044 KB
29.txt WA 35 ms 2044 KB
30.txt WA 36 ms 2044 KB
31.txt WA 42 ms 1792 KB
32.txt WA 42 ms 2044 KB
33.txt WA 41 ms 2044 KB
34.txt WA 40 ms 2044 KB
35.txt WA 39 ms 2044 KB
36.txt WA 38 ms 2044 KB
37.txt WA 39 ms 2044 KB
38.txt WA 36 ms 2044 KB
39.txt WA 34 ms 2044 KB
40.txt WA 32 ms 2044 KB
41.txt AC 3 ms 256 KB
42.txt AC 3 ms 256 KB
43.txt AC 3 ms 256 KB
44.txt AC 3 ms 256 KB
45.txt AC 3 ms 256 KB
46.txt AC 3 ms 256 KB
47.txt AC 3 ms 256 KB
48.txt AC 3 ms 256 KB
49.txt AC 3 ms 256 KB
50.txt AC 3 ms 256 KB
s1.txt AC 3 ms 256 KB
s2.txt WA 3 ms 256 KB
s3.txt AC 3 ms 256 KB