1.
def f(n):
    f = 1
    i = 0
    while i < n:
        i += 1
        f = f * i
    return f
print f(5)


3.
n = 10
for i in xrange(n/2):
    for j in xrange(n):
        if j<i+1 or j>n-i-2:
            print "*",
        else:
            print " ",
    print
for i in xrange(n/2,n):
    for j in xrange(n):
        if j<n-i or j>i-1:
            print "*",
        else:
            print " ",
    print



4.
n = 10
for i in xrange(n/2):
    for j in xrange(n*3/2+1):
        if j<i+1 or j>n-i-2 and j<i+n:
            print "*",
        else:
            print " ",
    print
for i in xrange(n/2,n):
    for j in xrange(n*3/2+1):
        if j<n-i or j>i-1 and j<n*2-i-1:
            print "*",
        else:
            print " ",
    print