{"raw_statement":[{"iden":"problem statement","content":"Find the largest square number not exceeding $N$. Here, a _square number_ is an integer that can be represented as the square of an integer."},{"iden":"constraints","content":"*   $1 \\leq N \\leq 10^9$\n*   $N$ is an integer."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$N$"},{"iden":"sample input 1","content":"10"},{"iden":"sample output 1","content":"9\n\n$10$ is not square, but $9 = 3 × 3$ is. Thus, we print $9$."},{"iden":"sample input 2","content":"81"},{"iden":"sample output 2","content":"81"},{"iden":"sample input 3","content":"271828182"},{"iden":"sample output 3","content":"271821169"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}