尝试输出圆周率（π）
You cannot submit for this problem because the contest is ended. You can click "Open in Problem Set" to view this problem in normal mode.
尽你所能，输出圆周率（π）吧！（精度越高越好）（最好全输出
提示：题目里已经有了
Limitation
1s, 1024KiB for each test case.
You cannot submit for this problem because the contest is ended. You can click "Open in Problem Set" to view this problem in normal mode.
1s, 1024KiB for each test case.
