AtCoder Beginner Contest 203（Sponsored by Panasonic）
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Problem Statement
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Takahashi threw three dice, and they showed three numbers $a$, $b$, and $c$.
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If there are two same numbers among $a$, $b$, and $c$, print the remaining number. Otherwise, print $0$.
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Constraints
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$1 \leq a,b,c \leq 6$- All of
$a$,$b$, and$c$are integers.
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Input
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Input is given from Standard Input in the following format:
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a b c翻译中…
Output
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If there are two same numbers among $a$, $b$, and $c$, print the remaining number. Otherwise, print $0$.
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样例
Input #1
2 5 2
Output #1
5
The first and third dice both showed $2$, so we should print the number on the remaining dice, which is $5$.
Input #2
4 5 6
Output #2
0
Any two numbers are different, so we should print $0$.
Input #3
1 1 1
Output #3
1
Any two numbers are the same. Whichever two dice we choose, the number on the remaining dice will be $1$.
题目信息
题面与样例版权归 AtCoder 及出题人所有；中文翻译由 AI 生成（CI 管线），如有出入请以原文为准。