题目描述
Problem Statement
There is a tree with N vertices.
The 1-st vertex is the root, and the parent of the $i-th vertex (2\leq i\leq N)$ is p _ i\ $(1\leq p _ i\lt i)$.
Each non-root vertex has an enemy or a medicine on it.
Takahashi wants to defeat all the enemies.
Initially, his strength is 1, and he is at vertex 1.
For $i=2,\ldots,N$, the information of the i-th vertex is represented by a triple of integers (t _ i,s _ i,g _ i) as follows.
- If t _ i=1, there is an enemy at the i-th vertex. When Takahashi visits this vertex for the first time, if his strength is less than s _ i, Takahashi is defeated by the enemy and loses, after which he cannot move to other vertices. Otherwise, he defeats the enemy, and his strength increases by g _ i.
- If t _ i=2, there is a medicine at the i-th vertex. When Takahashi visits this vertex for the first time, he takes the medicine, and his strength is multiplied by g _ i. (For a vertex with a medicine, s _ i=0.)
There are at most 10 vertices with a medicine.
Takahashi can repeatedly move to an adjacent vertex.
Determine if he can defeat all the enemies.
Input
The input is given from Standard Input in the following format:
N
p _ 2 t _ 2 s _ 2 g _ 2
p _ 3 t _ 3 s _ 3 g _ 3
$\vdots$
p _ N t _ N s _ N g _ N
Output
Print the answer (Yes or No) in one line.
Constraints
- $2\leq N\leq 500$
- $1\leq p _ i\lt i$\ $(2\leq i\leq N)$
- $t _ i\in\lbrace1,2\rbrace$\ $(2\leq i\leq N)$
- $t _ i=1\implies1\leq s _ i\leq 10 ^ 9$\ $(2\leq i\leq N)$
- $t _ i=2\implies s _ i=0$\ $(2\leq i\leq N)$
- $1\leq g _ i\leq 10 ^ 9$\ $(2\leq i\leq N)$
- There are at most 10 vertices with t _ i=2.
- All input values are integers.
Sample Input 1
8
1 2 0 3
2 1 3 3
1 2 0 4
4 1 2 2
1 2 0 5
6 1 5 5
5 1 140 1
Sample Output 1
Yes
Initially, the tree looks like this:
Takahashi can defeat all the enemies by moving from vertex 1 to 2,3,2,1,6,7,6,1,4,5,8 in this order.
Here, his position and strength change as shown in the following figure (movements to vertices that have already been visited are omitted).
On the other hand, if he moves from vertex 1 to 4,5,8 in this order, for example, his strength when visiting vertex 8 will be less than s _ 8=140, so he will lose without defeating all the enemies.
Sample Input 2
12
1 1 166 619
1 1 17 592
2 1 222 983
2 1 729 338
5 1 747 62
3 1 452 815
3 2 0 1
4 2 0 40
4 1 306 520
6 1 317 591
1 1 507 946
Sample Output 2
No
Sample Input 3
12
1 1 1 791
2 2 0 410
2 1 724 790
2 1 828 599
5 2 0 13
3 1 550 803
1 1 802 506
5 1 261 587
6 1 663 329
8 1 11 955
9 1 148 917
Sample Output 3
Yes
Sample Input 4
12
1 2 0 1000000000
2 2 0 1000000000
3 2 0 1000000000
4 2 0 1000000000
5 2 0 1000000000
6 2 0 1000000000
7 2 0 1000000000
8 2 0 1000000000
9 2 0 1000000000
10 2 0 1000000000
11 1 1 1
Sample Output 4
Yes
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分