// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> Pi <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>-<2D><><EFBFBD><EFBFBD><EFBFBD>
begin
var n := 10000000;
var pp := Range(1,n).Select(x->(Random(),Random())).Where(p->sqr(p.Item1)+sqr(p.Item2)<1).Count/n*4;
Print(pp);
end.
