from numpy import*
a= array(eval(input("digite um vetor: ")))
b=(size(a))
c=(a[0])
d=(a[-1])
e=(max(a))
f=(min(a))
g=(sum(a))
s=g/b
print(b)
print(c)
print(d)
print(e)
print(f)
print(g)
print(round(s,2))