Description

Niu Niu recently took an introductory C++ course. The total score for this course is calculated as follows:
Total Score = Homework Score × $20$% + Quiz Score × $30$% + Final Exam Score × $50$%
Niu Niu wants to know what his final score for this course will be.

Input Format

A single line containing three non-negative integers $A$, $B$, $C$, representing Niu Niu's homework score, quiz score, and final exam score. The scores are separated by a space, and each score is out of $100$ points. $0 \le A, B, C \le 100$ and $A$, $B$, $C$ are multiples of $10$.

Output Format

A single line containing an integer, representing Niu Niu's total score for the course, also out of $100$ points.

Sample

100 100 80

90