#include <iostream>
#include <math.h>
using namespace std;
double store[1000000];
int main()
{
int i=0;
while(cin>>store[i++]);
for (i--;i>=0;i--)
printf("%.4lf\n",sqrt(store[i]));
return 0;
}

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
int i;
double M[8000000];
int main()
{
double t;
int n=0;
while ( cin >> t )
{
M[n] = sqrt( t );
n++;
}

for( int i=n-1; i>=0; i--)
{
printf("%.4f\n", M[i] ) ;
}
return 0;
}