#include <cstdio>
#include <cmath>

#define MAX 100

int main(){
    long double a[MAX];
    int i;
    for(i = 0; scanf("%Lf",&a[i]) == 1; i++);
    for(i = i-1; i >= 0; i--){
        printf("%.4Lf\n",sqrtl(a[i]));
    }
    return 0;
}

Because number of elements can be larger than 100 (the size of input is up to 256KB)