hackerrank game of thrones

gistfile1.txt

from collections import Counter

def algo(s):
    v = len(filter(lambda x: x % 2 == 1, Counter(s).values()))
    if v <=1:
        return True
    else: 
        return False
 
string = raw_input()
found = algo(string)
# Write the code to find the required palindrome and then assign the variable 'found' a value of True or False

if not found:
    print("NO")
else:
    print("YES")