{"problem":{"name":"uNrEaDaBlE sTrInG","description":{"content":"We call a string **hard-to-read** when its odd-positioned ($1$\\-st, $3$\\-rd, $5$\\-th, ... from the beginning) characters are all lowercase English letters and its even-positioned characters ($2$\\-nd, ","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc192_b"},"statements":[{"statement_type":"Markdown","content":"We call a string **hard-to-read** when its odd-positioned ($1$\\-st, $3$\\-rd, $5$\\-th, ... from the beginning) characters are all lowercase English letters and its even-positioned characters ($2$\\-nd, $4$\\-th, $6$\\-th, ... from the beginning) are all uppercase English letters.\nDetermine whether a string $S$ is hard-to-read.\n\n## Constraints\n\n*   $S$ consists of uppercase and lowercase English letters.\n*   The length of $S$ is between $1$ and $1000$ (inclusive).\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":"abc192_b","tags":[],"sample_group":[["dIfFiCuLt","Yes\n\nThe odd-positioned characters are all lowercase and the even-positioned characters are all uppercase, so it is hard-to-read."],["eASY","No\n\nThe $3$\\-rd character is not lowercase, so it is not hard-to-read."],["a","Yes"]],"created_at":"2026-03-03 11:01:14"}}