import java.util.*;
import java.lang.*;
import java.io.*;
class Depo
{
{
double n;
double x, p=1;
double cs, sc;
Scanner in
= new Scanner
(System.
in); x=in.nextDouble();
n=in.nextDouble();
for(int k=1; k<=n; k++){
p*= (k / (k + 1)) - cs;
cs*=sc;
}
}
}
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