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Do note that this website only supports submissions in C++.

## Problem Description

After organising a long 3 hour contest, Peanut is now computing the final contest scores for all the *N* contestants who participated in the contest. The contest only consists of 10 programming problems, thus each contestant can only score a score from 0 to 1 000.

In order to make tabulating the scores easier, Peanut wants to only average the scores of a selected group of *C* contestants which will be randomly selected from the group of *N* contestants. Given the names and scores of all the contestants, and the names of the *C* selected contestants, help Peanut calculate the average of the scores of the selected contestants. It is guranteed that no two contestants have the same name.

## Input

The first line of input will contain one integer, *N*.

The next *N* lines of input will contain one string and one integer each, with line *i* indicating the name and score of contestant *i*.

The following line of input will contain one integer, *C*.

The next *C* lines of input will contain one string each, where line *i* will contain the *i*th selected contestant.

## Output

Your output should contain one integer, the average score of the *C* selected contestants, rounded down to the nearest integer.

## Limits

For all subtasks: The name of the contestant is guranteed to be less than 20 characters.

Subtask 1 (34%): 1 ≤ N ≤ 500

Subtask 2 (66%): 1 ≤ N ≤ 100 000

Subtask 3 (0%): As per sample testcases

## Sample Input 1

3 Solomon 400 Samuel 500 Aaron 450 2 Samuel Aaron

## Sample Output 1

475

## Sample Input 2

5 Sam 400 Jingchun 266 Samuel 266 Buck 100 Solomon 100 3 Buck Solomon Sam

## Sample Output 2

200

### Tags

### Subtasks and Limits

Subtask | Score | #TC | Time | Memory | Scoring |
---|---|---|---|---|---|

1 | 34 | 20 | 1s | 128MB | Minimum |

2 | 66 | 20 | 1s | 128MB | Minimum |

3 | 0 | 2 | 1s | 128MB | Minimum |

### Judge Compile Command

g++-8 ans.cpp -o contestcalc -Wall -Wshadow -static -O2 -lm -m64 -s -w -std=gnu++17 -fmax-errors=512