{"problem":{"name":"1 21","description":{"content":"AtCoDeer the deer has found two positive integers, $a$ and $b$. Determine whether the concatenation of $a$ and $b$ in this order is a square number.","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc086_b"},"statements":[{"statement_type":"Markdown","content":"AtCoDeer the deer has found two positive integers, $a$ and $b$. Determine whether the concatenation of $a$ and $b$ in this order is a square number.\n\n## Constraints\n\n*   $1$ $≤$ $a,b$ $≤$ $100$\n*   $a$ and $b$ are integers.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$a$ $b$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc086_b","tags":[],"sample_group":[["1 21","Yes\n\nAs $121$ $=$ $11$ × $11$, it is a square number."],["100 100","No\n\n$100100$ is not a square number."],["12 10","No"]],"created_at":"2026-03-03 11:01:13"}}