102030: [AtCoder]ABC203 A - Chinchirorin
Memory Limit:256 MB
Time Limit:2 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
Description
Score : $100$ points
Problem Statement
Takahashi threw three dice, and they showed three numbers $a$, $b$, and $c$.
If there are two same numbers among $a$, $b$, and $c$, print the remaining number. Otherwise, print $0$.
Constraints
- $1 \leq a,b,c \leq 6$
- All of $a$, $b$, and $c$ are integers.
Input
Input is given from Standard Input in the following format:
$a$ $b$ $c$
Output
If there are two same numbers among $a$, $b$, and $c$, print the remaining number. Otherwise, print $0$.
Sample Input 1
2 5 2
Sample Output 1
5
The first and third dice both showed $2$, so we should print the number on the remaining dice, which is $5$.
Sample Input 2
4 5 6
Sample Output 2
0
Any two numbers are different, so we should print $0$.
Sample Input 3
1 1 1
Sample Output 3
1
Any two numbers are the same. Whichever two dice we choose, the number on the remaining dice will be $1$.