Problem : TestVita
TCS is working on a new project called "TestVita".
There are N modules in the project. Each module (i) has
completion time denoted in number of hours (H_{i}) and may depend on other modules. If Module x depends
on Module y then one needs to complete y before x.
As Project manager, you are asked to deliver the project as early as possible.
Provide an estimation of amount of time required to complete the project.
As Project manager, you are asked to deliver the project as early as possible.
Provide an estimation of amount of time required to complete the project.
Input Format:
First line contains T, number of test cases.
For each test case:
First line contains T, number of test cases.
For each test case:
1.
First line contains N,
number of modules.
2.
Next N lines, each contain:
o (i) Module ID
o (H_{i}) Number of hours it takes to complete the module
o (D) Set of module ids that i depends on  integers delimited by space.
Output Format:
Output the minimum number of hours required to deliver the project.
Output the minimum number of hours required to deliver the project.
Constraints:
1. 1 <= T <= 10
2. 0 < N < 1000; number of modules
3. 0 < i <= N; module ID
4. 0 < H_{i} <
60; number of hours it takes to complete the module i
5. 0 <= D < N; number of dependencies
6. 0 < D_{k} <=
N; module ID of dependencies
Sample
Input and Output
SNo.

Input

Output

1

1 5 1 5 2 6 1 3 3 2 4 2 3 5 1 3 
16 
Explanation:
Module 2 depends on module 1, hence complete module 1 first
After completing module 1 we can complete module 2 and then module 3
Module 4 and 5 can be started simultaneously in parallel after module 3 is completed.
Hence the answer = 5 + 6 + 3 + 2 = 16
Module 2 depends on module 1, hence complete module 1 first
After completing module 1 we can complete module 2 and then module 3
Module 4 and 5 can be started simultaneously in parallel after module 3 is completed.
Hence the answer = 5 + 6 + 3 + 2 = 16