{"code":"k14","name":"Quy luật","description":"Cho $f(i, j)$ được tính theo công thức sau.\r\n\r\n![](https://i.imgur.com/CzkuAJp.png)\r\n\r\n#### Input\r\n- 2 số nguyên dương $x,y(x \\leq 10^9,y \\leq 5)$.\r\n\r\n#### Output \r\n- $f(x,y)$.\r\n\r\n#### Example\r\n!!! question \"Test 1\"\r\n    ???+ \"Input\"\r\n        ```sample\r\n        6 3 \r\n        ```\r\n    ???+ success \"Output\"\r\n        ```sample\r\n        25\r\n        ```","points":100.0,"partial":false,"time_limit":1.0,"memory_limit":655360,"short_circuit":false,"allowed_languages":[3,4,34,36,37,5,6,11,12,14,28,2,38,39,9,18,17,29,23,27,35,25,26,10,7,19,32,1,8,15,16,24,20,33,13,41,21,40],"is_public":true,"is_manually_managed":false,"permissions":{"can_edit":false}}