{"trustable":false,"prependHtml":"\u003cstyle type\u003d\"text/css\"\u003e\n section pre {\n display: block;\n padding: 9.5px;\n margin: 0 0 10px;\n font-size: 13px;\n line-height: 1.42857143;\n word-break: break-all;\n word-wrap: break-word;\n color: #333;\n background: rgba(255, 255, 255, 0.5);\n border: 1px solid #ccc;\n border-radius: 6px;\n }\n\u003c/style\u003e\n\u003cscript\u003e\n window.katexOptions \u003d {\n delimiters: [\n {left: \u0027\\\\(\u0027, right: \u0027\\\\)\u0027, display: false},\n {left: \u0027\\\\[\u0027, right: \u0027\\\\]\u0027, display: true}\n ]\n };\n\u003c/script\u003e\n","sections":[{"title":"Problem Statement","value":{"format":"HTML","content":"在肺炎病毒流行的期間,大家流行一種新的生活型態--順時鐘生活!大家做每件事情都會順時鐘做,像是順時鐘走路,順時鐘吃飯,順時鐘洗澡,順時鐘睡覺,順時鐘玩狼人殺。這天你看著時鐘一如往常順時鐘走著,開始順時鐘思考。忽然你很好奇一件事情:這時候時針的尖端和分針的尖端距離有多遠呢?你已經知道時鐘的時針是A公分長,分真是B公分長,而目前的時間是H時M分。為了能夠順時鐘成功,你決定順時鐘寫一個程式,利用以上的條件求出兩個指針尖端的距離。"}},{"title":"Constraints","value":{"format":"HTML","content":"所有輸入都是整數,其中A和B介於1~1000之間;H介於1~11之間;M介於0~59之間"}},{"title":"Input","value":{"format":"HTML","content":"輸入只有一行,由左到右分別是A, B, H, M,以空格分開"}},{"title":"Output","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e \n\u003cp\u003e輸出答案,不需要輸出單位,如果你的輸出和正確答案誤差不超過0.000000001,則都被視為正確\u003c/p\u003e"}},{"title":"Sample Input 1","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e3 4 9 0\n\u003c/pre\u003e"}},{"title":"Sample Output 1","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e5.00000000000000000000\n\u003c/pre\u003e \n\u003cp\u003e目前時鐘的狀態如圖所示,可以得出答案為5\u003c/p\u003e \n\u003cp\u003e\u003cimg alt\u003d\"The clock at \u003cvar\u003e\\(9\\)\u003c/var\u003e o\u0027clock\" SRC\u003d\"CDN_BASE_URL/59ade0604daa56dcbdc738e4d9bc1308?v\u003d1591096875\" title\u003d\"The clock at 9 o\u0027clock\"\u003e\u003c/p\u003e"}},{"title":"Sample Input 2","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e3 4 10 40\n\u003c/pre\u003e"}},{"title":"Sample Output 2","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e4.56425719433005567605\n\u003c/pre\u003e \n\u003cp\u003e目前時鐘的狀態如圖所示,注意兩個指針都各自以等速率轉動\u003c/p\u003e \n\u003cp\u003e\u003cimg alt\u003d\"The clock at \u003cvar\u003e\\(10:40\\)\u003c/var\u003e\" SRC\u003d\"CDN_BASE_URL/eeeba5c98fa359172135b821364bdacc?v\u003d1591096875\" title\u003d\"The clock at 10:40\"\u003e\u003c/p\u003e"}}]}