#include <stdio.h>
#include <math.h>
#define NUM 5

double dist(double *, double *);

void main(void)
{
    int     i, j;
    double  p[NUM][2];
    double  min = 1.0e100;

    for (i = 0; i < NUM; i++)
      scanf("%lf %lf", &p[i][0], &p[i][1]);

    for (i = 0; i < NUM; i++)
	for (j = i+1; j < NUM; j++)
	    if (min > dist(p[i], p[j]))
		min = dist(p[i], p[j]);

    printf("Shortest distance = %lf\n", min);
}

double dist(double p0[], double p1[])
{
    return(sqrt((p0[0] - p1[0]) * (p0[0] - p1[0]) +
		(p0[1] - p1[1]) * (p0[1] - p1[1])));
}