The youngest in the family
Easy
Execution time limit is 1 second
Runtime memory usage limit is 64 megabytes
The average age of a family of four is a years, and t years ago, it was b years. Determine the age of the youngest family member.
Input
The input consists of a single line containing three natural numbers: t, a, and b.
Output
The output should be the age of the youngest member of the family.
Examples
Input #1
Answer #1
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