## VPEX P5 - Points Redistribution

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Points: 20 (partial)
Time limit: 0.8s
Memory limit: 128M

Author:
Problem types

After the revolution, Aaeria has been unrated again and all their points have been taken away. Now, they are working their way back up. On DMOJ there are problems, the th of which takes minutes to implement and are worth points.

Unfortunately, due to Aaeria's poor programming abilities, they must rely on Bruce for help. This year, Bruce is teaching classes. During each class, Aaeria is taught the topics used in the problems from to and has minutes to solve the problems. Aaeria can only solve the topics taught in that class because after the class, Aaeria looks at memes and forgets everything they learned.

Every time Aaeria solves problem , they gains points. Each problem can be solved at most once per class.

Help Aaeria regain their former status and calculate how many points can be obtained by the end of the year.

#### Input

The first line contains .

The next lines contain and , representing time and value of the th problem.

The next line contains .

The next lines contain , and indicating a class minutes long covering problems from to , including and .

#### Output

The maximum total points that can be earned.

#### Sample Input 1

2
2 30
2 35
2
1 2 4
1 2 3

#### Sample Output 1

100

#### Explanation for Sample Output 1

In the first class, he can solve problem 1 and 2. In the second class, he solves problem 2.

#### Sample Input 2

4
30 50
20 40
40 45
20 45
4
2 4 100
1 4 100
1 1 100
1 3 100

#### Sample Output 2

455

#### Sample Input 3

10
60 55
85 72
86 61
85 55
63 43
39 65
30 44
6 90
28 97
48 39
10
8 9 53
5 6 40
9 10 8
1 4 65
1 4 84
8 10 15
9 9 98
5 8 81
5 6 79
2 7 73

#### Sample Output 3

922