#A. Write a function that takes one string as a parameter, and
#   - returns True if the string contains any sequence like 'a*k' in it,
#     where * can be any character, and False otherwise

#You can assume the input string is in lower case
# E.g.,
# barkingmad returns True
# basking mad returns True
# borking mad returns False

def pattern(s):

    for i in range(len(s)-2):
        if s[i]=='a'and s[i+2]=='k':
            return True
    
    return False

print pattern('barkingmad')        
print pattern('boardking')

print 'to do'


#B. Write a function that takes a positive integer n and
#returns the sum of all even integers from 2 through n
#(possibly inclusive of n, if n is even).

def sumofevens(n):
    mysum = 0
    for i in range(n+1):
        if i % 2 == 0:
            mysum += i

    return mysum
            


print 'to do'