Ural 1001. Reverse Root

#include<cstdio>
#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdlib>
#include<cmath>
using namespace std;
long long a[1100000];
int main()
{
int len=0;
while(scanf("%I64d",&a[++len])!=EOF);
for(int i=len-1;i>=1;i--) printf("%.4lf\n",sqrt(a[i]*1.0));
return 0;
}