{"problem":{"name":"AcCepted","description":{"content":"You are given a string $S$. Each character of $S$ is uppercase or lowercase English letter. Determine if $S$ satisfies all of the following conditions: *   The initial character of $S$ is an uppercas","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc104_b"},"statements":[{"statement_type":"Markdown","content":"You are given a string $S$. Each character of $S$ is uppercase or lowercase English letter. Determine if $S$ satisfies all of the following conditions:\n\n*   The initial character of $S$ is an uppercase `A`.\n*   There is exactly one occurrence of `C` between the third character from the beginning and the second to last character (inclusive).\n*   All letters except the `A` and `C` mentioned above are lowercase.\n\n## Constraints\n\n*   $4 ≤ |S| ≤ 10$ ($|S|$ is the length of the string $S$.)\n*   Each character of $S$ is uppercase or lowercase English letter.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$S$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc104_b","tags":[],"sample_group":[["AtCoder","AC\n\nThe first letter is `A`, the third letter is `C` and the remaining letters are all lowercase, so all the conditions are satisfied."],["ACoder","WA\n\nThe second letter should not be `C`."],["AcycliC","WA\n\nThe last letter should not be `C`, either."],["AtCoCo","WA\n\nThere should not be two or more occurrences of `C`."],["Atcoder","WA\n\nThe number of `C` should not be zero, either."]],"created_at":"2026-03-03 11:01:14"}}