5597: Adam and Tree
内存限制：256 MB
时间限制：2 S
题面：传统
评测方式：文本比较
上传者：
提交：1
通过：1
题目描述
D. Adam and Tree
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output
When Adam gets a rooted tree (connected non-directed graph without cycles), he immediately starts coloring it. More formally, he assigns a color to each edge of the tree so that it meets the following two conditions:
Initially, Adam's tree consists of a single vertex that has number one and is the root. In one move Adam adds a new vertex to the already existing one, the new vertex gets the number equal to the minimum positive available integer. After each operation you need to calculate the minimum cost of coloring the resulting tree.
- There is no vertex that has more than two incident edges painted the same color.
- For any two vertexes that have incident edges painted the same color (say, c), the path between them consists of the edges of the color c.
Initially, Adam's tree consists of a single vertex that has number one and is the root. In one move Adam adds a new vertex to the already existing one, the new vertex gets the number equal to the minimum positive available integer. After each operation you need to calculate the minimum cost of coloring the resulting tree.
Input
The first line contains integer n (1≤n≤106) − the number of times a new vertex is added. The second line contains n numbers pi (1≤pi≤i) − the numbers of the vertexes to which we add another vertex.
Output
Print n integers − the minimum costs of the tree painting after each addition.
Examples
Input
11 1 1 1 3 4 4 7 3 7 6 6
Output
1 1 1 1 1 2 2 2 2 2 3
Note
The figure below shows one of the possible variants to paint a tree from the sample at the last moment. The cost of the vertexes with numbers 11 and 12 equals 3. 
输入样例 复制
输出样例 复制