{"raw_statement":[{"iden":"problem statement","content":"You are given three integers $A$, $B$ and $C$. Find the minimum number of operations required to make $A$, $B$ and $C$ all equal by repeatedly performing the following two kinds of operations in any order:\n\n*   Choose two among $A$, $B$ and $C$, then increase both by $1$.\n*   Choose one among $A$, $B$ and $C$, then increase it by $2$.\n\nIt can be proved that we can always make $A$, $B$ and $C$ all equal by repeatedly performing these operations."},{"iden":"constraints","content":"*   $0 \\leq A,B,C \\leq 50$\n*   All values in input 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 4"},{"iden":"sample output 1","content":"2\n\nWe can make $A$, $B$ and $C$ all equal by the following operations:\n\n*   Increase $A$ and $C$ by $1$. Now, $A$, $B$, $C$ are $3$, $5$, $5$, respectively.\n*   Increase $A$ by $2$. Now, $A$, $B$, $C$ are $5$, $5$, $5$, respectively."},{"iden":"sample input 2","content":"2 6 3"},{"iden":"sample output 2","content":"5"},{"iden":"sample input 3","content":"31 41 5"},{"iden":"sample output 3","content":"23"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}