from random import randint

N = 100
M = 0

for i in range(N):
    r = randint(0,1)
    if r == 0:
        print('head')
        M+=1
    else:
        print('tail')

print('Number of heads ',M)

"""
Terminal> python flip_coin.py
head
tail
head
...
head
tail
tail
head
tail
tail
tail
Number of heads  51
"""