a(1):

a=data[3].rstrip()
cnt=0
for char in a:
	if (char=='C'):
		cnt=cnt+1

print cnt

a(2):

b=data[1].rstrip()
c=data[3].rstrip()

cnt=0
for i in range(0, 5):
	char1=b[i]
	char2=c[i]
	if (char1==char2):
		cnt=cnt+1

print cnt

b: see the python script file ex1b.py

c: 
def my_max(nums):
 largest=nums[0]
 for x in nums:
  if x > largest:
   largest = x
 return largest