{"raw_statement":[{"iden":"problem statement","content":"This contest is `CODEFESTIVAL`, which can be shortened to the string `CF` by deleting some characters.\nMr. Takahashi, full of curiosity, wondered if he could obtain `CF` from other strings in the same way.\nYou are given a string $s$ consisting of uppercase English letters. Determine whether the string `CF` can be obtained from the string $s$ by deleting some characters."},{"iden":"constraints","content":"*   $2 ≤ |s| ≤ 100$\n*   All characters in $s$ are uppercase English letters (`A`\\-`Z`)."},{"iden":"input","content":"The input is given from Standard Input in the following format:\n\n$s$"},{"iden":"sample input 1","content":"CODEFESTIVAL"},{"iden":"sample output 1","content":"Yes\n\n`CF` is obtained by deleting characters other than the first character `C` and the fifth character `F`."},{"iden":"sample input 2","content":"FESTIVALCODE"},{"iden":"sample output 2","content":"No\n\n`FC` can be obtained but `CF` cannot be obtained because you cannot change the order of the characters."},{"iden":"sample input 3","content":"CF"},{"iden":"sample output 3","content":"Yes\n\nIt is also possible not to delete any characters."},{"iden":"sample input 4","content":"FCF"},{"iden":"sample output 4","content":"Yes\n\n`CF` is obtained by deleting the first character."}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}