from math import sqrt
x1 = int(input())
x2 = int(input())
x3 = int(input())
y4 = int(input())
y5 = int(input())
y6 = int(input())
dAB = sqrt((x2-x1)**2+(y5-y4)**2)
dBC = sqrt((x3-x2)**2+(y6-y5)**2)
dCA = sqrt((x1-x3)**2+(y4-y6)**2)
print("{:.3}".format(dAB))
print("{:.3}".format(dBC))
print("{:.3}".format(dCA))