{"raw_statement":[{"iden":"problem statement","content":"Assuming that the horizon seen from a place $x$ meters above the ground is $\\sqrt{x(12800000+x)}$ meters away, find how many meters away the horizon seen from a place $H$ meters above the ground is."},{"iden":"constraints","content":"*   $1 \\leq H \\leq 10^5$\n*   $H$ is an integer."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$H$"},{"iden":"sample input 1","content":"333"},{"iden":"sample output 1","content":"65287.907678222\n\nWe have $\\sqrt{333(12800000+333)} = 65287.9076782\\ldots$. Outputs such as `65287.91` would also be accepted."},{"iden":"sample input 2","content":"634"},{"iden":"sample output 2","content":"90086.635834623\n\nWe have $\\sqrt{634(12800000+634)} = 90086.6358346\\ldots$."}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}