#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <climits>

using namespace std;

//#define int long long

signed main()
{
	int n;
	cin >> n;
	vector<vector<int>> g(n);
	for (size_t i = 0; i < n-1; i++)
	{
		int a;
		cin >> a;
		a--;
		g[a].push_back(i);
		g[i].push_back(a);
	}
	vector<int> dist(n);
	queue<pair<int,int>> BFS;
	BFS.push({ 0,0 });
	while (!BFS.empty()) {
		pair<int, int> cur = BFS.front();
		BFS.pop();
		for (size_t i = 0; i < g[cur.first].size(); i++)
		{
			int val = g[cur.first][i];
			if (dist[val] == 0) {
				dist[val] = cur.second+1;
				BFS.push({ val,cur.second + 1 });
			}
		}
	}
	int minRes = INT_MAX;
	for (size_t i = 1; i < dist.size(); i++) {
		if (g[i].size() == 1) {
			minRes = min(dist[i], minRes);
		}
	}
	cout << minRes << "\n";
	dist[0] = 0;
	for (size_t i = 0; i < dist.size(); i++)
	{
		cout << min(minRes, dist[i] + 1) << " ";
	}
}