{"raw_statement":[{"iden":"problem statement","content":"Takahashi threw three dice, and they showed three numbers $a$, $b$, and $c$.\nIf there are two same numbers among $a$, $b$, and $c$, print the remaining number. Otherwise, print $0$."},{"iden":"constraints","content":"*   $1 \\leq a,b,c \\leq 6$\n*   All of $a$, $b$, and $c$ are integers."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$a$ $b$ $c$"},{"iden":"sample input 1","content":"2 5 2"},{"iden":"sample output 1","content":"5\n\nThe first and third dice both showed $2$, so we should print the number on the remaining dice, which is $5$."},{"iden":"sample input 2","content":"4 5 6"},{"iden":"sample output 2","content":"0\n\nAny two numbers are different, so we should print $0$."},{"iden":"sample input 3","content":"1 1 1"},{"iden":"sample output 3","content":"1\n\nAny two numbers are the same. Whichever two dice we choose, the number on the remaining dice will be $1$."}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}