102010: [AtCoder]ABC201 A - Tiny Arithmetic Sequence
Memory Limit:256 MB
Time Limit:2 S
Judge Style:Text Compare
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Solved:0
Description
Score : $100$ points
Problem Statement
You are given a sequence of three numbers: $A=(A_1,A_2,A_3)$.
Is it possible to rearrange the elements of $A$ into an arithmetic sequence?
In other words, is it possible to rearrange the elements of $A$ so that $A_3-A_2=A_2-A_1$?
Constrains
- $1 \leq A_i \leq 100$
- All values in input are integers.
Input
Input is given from Standard Input in the following format:
$A_1$ $A_2$ $A_3$
Output
If it is possible to rearrange the elements of $A$ into an arithmetic sequence, print Yes
; otherwise, print No
.
Sample Input 1
5 1 3
Sample Output 1
Yes
We can rearrange them into an arithmetic sequence by, for example, making it $(1,3,5)$.
Sample Input 2
1 4 3
Sample Output 2
No
There is no way to rearrange them into an arithmetic sequence.
Sample Input 3
5 5 5
Sample Output 3
Yes
All elements of $A$ may be equal, or $A$ may be an arithmetic sequence already.