#include <stdio.h>
#include <math.h>

int main()
{
        unsigned long long int in[320000];
        int count = 0;
        while (scanf("%llu",&in[count]) != EOF) count++;
        while (count > 0){
                printf("%.4Lf\n",sqrtl(in[count-1]));
                count--;
                }
        return 0;
}

Edited by author 21.03.2013 17:19

#include <stdio.h>
#include <math.h>

int main()
{
        unsigned long long int in[131072];
        int count = 0;
        while (scanf("%llu",&in[count]) == 1) count++;
        while (count > 0){
                printf("%.4Lf\n",sqrtl(in[count-1]));
                count--;
                }
        return 0;
}