Minigolf

Time limit1sMemory limit1024 MB

Summary

Given strokes per hole, with odd holes par 2 and even holes par 3 and any hole capped at 7 strokes, print the total score relative to par.

Level: Easy2 of 10
Topics: Implementation, Math
Solved: No attempts yet

Problem

A minigolf course has $N$ holes. Every odd-numbered hole is a "par 2" and every even-numbered hole is a "par 3", where "par" is the recommended number of strokes a golfer should need to complete that hole. There is also a rule that if you take more than $7$ strokes on a hole, it still counts as only $7$ strokes in the final tally.

Write a program that, given the number of strokes you took on each hole, calculates the total score over or under par.

Input

The first line contains a single integer $N$ , the number of holes, where $2\le N\le 10$ . The second line contains $N$ integers between 1 and 10: the number of strokes you took on each hole.

Output

Print a single integer, the total score over or under par.

Examples2

Example 1
Input
```
3
5 3 1
```
Expected output
```
2
```
Example 2
Input
```
6
1 9 1 1 1 1
```
Expected output
```
-3
```