Problem: Barney lives in country USC (United States of Charzeh). USC has n cities numbered from 1 through n and n - 1 roads between them. Cities and roads of USC form a rooted tree (Barney's not sure why it is rooted). Root of the tree is the city number 1. Thus if one will start his journey from city 1, he can visit any city he wants by following roads.

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Some girl has stolen Barney's heart, and Barney wants to find her. He starts looking for in the root of the tree and (since he is Barney Stinson not a random guy), he uses a random DFS to search in the cities. A pseudo code of this algorithm is as follows:
    
    
      
    let starting_time be an array of length n  
    current_time = 0  
    dfs(v):  
    	current_time = current_time + 1  
    	starting_time[v] = current_time  
    	shuffle children[v] randomly (each permutation with equal possibility)  
    	// children[v] is vector of children cities of city v  
    	for u in children[v]:  
    		dfs(u)  
    

As told before, Barney will start his journey in the root of the tree (equivalent to call dfs(1)).

Now Barney needs to pack a backpack and so he wants to know more about his upcoming journey: for every city i, Barney wants to know the expected value of starting_time[i]. He's a friend of Jon Snow and knows nothing, that's why he asked for your help.

Input

The first line of input contains a single integer n (1 ≤ n ≤ 105) — the number of cities in USC.

The second line contains n - 1 integers p2, p3, ..., pn (1 ≤ pi < i), where pi is the number of the parent city of city number i in the tree, meaning there is a road between cities numbered pi and i in USC.

Output

In the first and only line of output print n numbers, where i-th number is the expected value of starting_time[i].

Your answer for each city will be considered correct if its absolute or relative error does not exceed 10 - 6.

Examples

Input

7
1 2 1 1 4 4


Output

1.0 4.0 5.0 3.5 4.5 5.0 5.0 


Input

12
1 1 2 2 4 4 3 3 1 10 8


Output

1.0 5.0 5.5 6.5 7.5 8.0 8.0 7.0 7.5 6.5 7.5 8.0 

Solution (in JAVA):

Solution:
import java.io.*;
import java.math.BigInteger;
import java.util.*;
import java.io.IOException;
import java.io.InputStream;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] args) {

        File file = new File("in.txt");
        InputStream inputStream = null;
//        try {inputStream= new FileInputStream(file);} catch (FileNotFoundException ex){return;};
        inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }
}





class TaskB {
    Integer[] parent;
    Integer[] subtreeSize;
    Map<Integer, Set<Integer>> children;
    Double[] expectedTime;
    Integer[] childrenSum;
    public void solve(int testNumber, InputReader in, PrintWriter out) {
        Integer nodes = in.nextInt();
        parent = new Integer[nodes];
        subtreeSize = new Integer[nodes];
        expectedTime = new Double[nodes];
        children = new HashMap<>();
        childrenSum = new Integer[nodes];

        for(int i=0; i<nodes;i++){
            subtreeSize[i] = 0;
            children.put(i,new HashSet<>());
            childrenSum[i] = 0;
        }
        for(int i = 1; i<nodes; i++){
            Integer node = in.nextInt()-1;
            parent[i] = node;
            children.get(node).add(i);
        }

        computeSize(0);
        for(int i=0; i<nodes; i++){
            Set<Integer> ch = children.get(i);
            childrenSum[i] = ch.stream().mapToInt(e -> subtreeSize[e]).sum();

        }


        computeExpectationFor(0);

        out.println(Arrays.stream(expectedTime).map(e -> e.toString()).collect(Collectors.joining(" ")));

    }

    private void computeExpectationFor(Integer node){
        if(node.equals(0)){
            expectedTime[0] = 1.0;
        }
        else {

            Integer p = parent[node];
            Set<Integer> siblings = children.get(p);
            Double siblingWeight = new Double(childrenSum[p] - subtreeSize[node]);
            if(siblings.size()>1) {
                siblingWeight = siblingWeight / (siblings.size() - 1);
            }
            else{
                siblingWeight = 0.0;
            }
            Double siblingsBefore = (siblings.size()-1) / 2.0;
            expectedTime[node] = expectedTime[p] + siblingsBefore * siblingWeight + 1.0;
        }
        for(Integer child : children.get(node)){
            computeExpectationFor(child);
        }
    }


    private Integer computeSize(Integer node) {
        Integer size = 1;
        for (Integer child : children.get(node)) {
            size += computeSize(child);
        }
        subtreeSize[node] = size;
        return size;
    }

}



class InputReader {
    public BufferedReader reader;
    public StringTokenizer tokenizer;

    public InputReader(InputStream stream) {
        reader = new BufferedReader(new InputStreamReader(stream), 32768);
        tokenizer = null;
    }

    public String next() {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            try {
                tokenizer = new StringTokenizer(reader.readLine());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return tokenizer.nextToken();
    }

    public String nextLine(){
        try {
            return reader.readLine();
        } catch (IOException e){
            throw new RuntimeException(e);
        }
    }

    public int nextInt() {
        return Integer.parseInt(next());
    }
    public long nextLong() { return Long.parseLong(next()); }

}



class Pair<F, S> {
    public final F first;
    public final S second;




    public Pair(F first, S second) {
        this.first = first;
        this.second = second;
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof Pair)) {
            return false;
        }
        Pair<?, ?> p = (Pair<?, ?>) o;
        return Objects.equals(p.first, first) && Objects.equals(p.second, second);
    }

    @Override
    public int hashCode() {
        return (first == null ? 0 : first.hashCode()) ^ (second == null ? 0 : second.hashCode());
    }

    @Override
    public String toString() {
        return "(" + first + ", " + second + ')';
    }
}