{"raw_statement":[{"iden":"problem statement","content":"A Hitachi string is a concatenation of one or more copies of the string `hi`.\nFor example, `hi` and `hihi` are Hitachi strings, while `ha` and `hii` are not.\nGiven a string $S$, determine whether $S$ is a Hitachi string."},{"iden":"constraints","content":"*   The length of $S$ is between $1$ and $10$ (inclusive).\n*   $S$ is a string consisting of lowercase English letters."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$S$"},{"iden":"sample input 1","content":"hihi"},{"iden":"sample output 1","content":"Yes\n\n`hihi` is the concatenation of two copies of `hi`, so it is a Hitachi string."},{"iden":"sample input 2","content":"hi"},{"iden":"sample output 2","content":"Yes"},{"iden":"sample input 3","content":"ha"},{"iden":"sample output 3","content":"No"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}