PROGRAMMING:Final score
Keven has just finished the C language final exam, and he knows that the formula for calculating the total score is as follows:
Total score = usual score × 0.3 + midterm score × 0.2 + final exam score × zero point five
Now $$Keven $$has known his usual score, mid-term exam score and final exam score. He wants you to help him calculate his final score.
###Input format:
Enter 3 positive integers separated by spaces in one line $$a, B, C (1 < = a, B, C < = 100)$$
It represents the usual score, mid-term examination score and final examination score of $$Keven $$.
###Output format:
Output the total score of C language of $$Keven $$in one line（ Keep one decimal place)
###Input example:
```in
100 100 100
```
###Output example:
```out
one hundred
```
(why does $$Keven $$know his final exam score in advance? Because all the wrong questions on the test paper were deliberately made by $$Keven $$) < br > < br > < br > < br > < br > < br > in the test paper, all the mistakes were made by $$Keven $$
answer：If there is no answer, please comment
Total score = usual score × 0.3 + midterm score × 0.2 + final exam score × zero point five
Now $$Keven $$has known his usual score, mid-term exam score and final exam score. He wants you to help him calculate his final score.
###Input format:
Enter 3 positive integers separated by spaces in one line $$a, B, C (1 < = a, B, C < = 100)$$
It represents the usual score, mid-term examination score and final examination score of $$Keven $$.
###Output format:
Output the total score of C language of $$Keven $$in one line（ Keep one decimal place)
###Input example:
```in
100 100 100
```
###Output example:
```out
one hundred
```
(why does $$Keven $$know his final exam score in advance? Because all the wrong questions on the test paper were deliberately made by $$Keven $$) < br > < br > < br > < br > < br > < br > in the test paper, all the mistakes were made by $$Keven $$
answer：If there is no answer, please comment