96 人解决，120 人已尝试。
121 份提交通过，共有 531 份提交。
3.6 EMB 奖励。
单点时限: 2.0 sec
内存限制: 256 MB
Someone has let a goat in a square kitchen-garden and had bound it to a stake. The stake is driven into the ground in the very midst of the square. The goat is hungry as a hunter and very voracious, and eats everything that can be reached without leaving the square and tearing the roap. What area of the kitchen-garden will be ate round?
There are several test cases.Each contains lengths of the garden sides and a cord length in meters (natural numbers not exceeding $100$, located in one line and separated with a space).
Should contain an area of the kitchen-garden (in square meters to within $3$ symbols after a decimal point), ate round by the goat.
10 6
95.091
96 人解决，120 人已尝试。
121 份提交通过，共有 531 份提交。
3.6 EMB 奖励。
创建: 16 年，12 月前.
修改: 7 年，1 月前.
最后提交: 3 年，9 月前.
来源: The 3rd high school children programming contest, USU, Yekaterin