{"raw_statement":[{"iden":"problem statement","content":"You are given a positive integer $N$. Find the minimum positive integer divisible by both $2$ and $N$."},{"iden":"constraints","content":"*   $1 \\leq N \\leq 10^9$\n*   All values in input are integers."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$N$"},{"iden":"sample input 1","content":"3"},{"iden":"sample output 1","content":"6\n\n$6$ is divisible by both $2$ and $3$. Also, there is no positive integer less than $6$ that is divisible by both $2$ and $3$. Thus, the answer is $6$."},{"iden":"sample input 2","content":"10"},{"iden":"sample output 2","content":"10"},{"iden":"sample input 3","content":"999999999"},{"iden":"sample output 3","content":"1999999998"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}