{"problem":{"name":"CF","description":{"content":"This contest is `CODEFESTIVAL`, which can be shortened to the string `CF` by deleting some characters. Mr. Takahashi, full of curiosity, wondered if he could obtain `CF` from other strings in the same","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":1000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"codefestival_2016_qualC_a"},"statements":[{"statement_type":"Markdown","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.\n\n## Constraints\n\n*   $2 ≤ |s| ≤ 100$\n*   All characters in $s$ are uppercase English letters (`A`\\-`Z`).\n\n## Input\n\nThe input is given from Standard Input in the following format:\n\n$s$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"codefestival_2016_qualC_a","tags":[],"sample_group":[["CODEFESTIVAL","Yes\n\n`CF` is obtained by deleting characters other than the first character `C` and the fifth character `F`."],["FESTIVALCODE","No\n\n`FC` can be obtained but `CF` cannot be obtained because you cannot change the order of the characters."],["CF","Yes\n\nIt is also possible not to delete any characters."],["FCF","Yes\n\n`CF` is obtained by deleting the first character."]],"created_at":"2026-03-03 11:01:14"}}