{"raw_statement":[{"iden":"problem statement","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."},{"iden":"constraints","content":"*   $1$ $≤$ $a,b$ $≤$ $100$\n*   $a$ and $b$ are integers."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$a$ $b$"},{"iden":"sample input 1","content":"1 21"},{"iden":"sample output 1","content":"Yes\n\nAs $121$ $=$ $11$ × $11$, it is a square number."},{"iden":"sample input 2","content":"100 100"},{"iden":"sample output 2","content":"No\n\n$100100$ is not a square number."},{"iden":"sample input 3","content":"12 10"},{"iden":"sample output 3","content":"No"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}