{"trustable":false,"sections":[{"title":"Description","value":{"format":"MD","content":"Sidney老哥忘了这题怎么做,快来教教他吧。/羞羞羞\nRxR:[-a,a]x[-b,b]中随机取点P,求以(0,0)和P为对角线的长方形面积大于S的概率。"}},{"title":"Input","value":{"format":"MD","content":"输入第一行包含组数N ≤ 200。\n接下来N行每行包含a\u003e0,b\u003e0,S≥0。\n"}},{"title":"Output","value":{"format":"MD","content":"每组数据输出一行,形式如下。保留6位小数。\n\n"}},{"title":"Sample Input","value":{"format":"MD","content":"3\n10 5 20\n1 1 1\n2 2 0\n"}},{"title":"Sample Output","value":{"format":"MD","content":"23.348371%\n0.000000%\n100.000000%\n"}}]}