{"raw_statement":[{"iden":"problem statement","content":"Let $w$ be a string consisting of lowercase letters. We will call $w$ _beautiful_ if the following condition is satisfied:\n\n*   Each lowercase letter of the English alphabet occurs even number of times in $w$.\n\nYou are given the string $w$. Determine if $w$ is beautiful."},{"iden":"constraints","content":"*   $1 \\leq |w| \\leq 100$\n*   $w$ consists of lowercase letters (`a`\\-`z`)."},{"iden":"input","content":"The input is given from Standard Input in the following format:\n\n$w$"},{"iden":"sample input 1","content":"abaccaba"},{"iden":"sample output 1","content":"Yes\n\n`a` occurs four times, `b` occurs twice, `c` occurs twice and the other letters occur zero times."},{"iden":"sample input 2","content":"hthth"},{"iden":"sample output 2","content":"No"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}