Created
March 11, 2015 04:12
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| import sys | |
| def pali(l): | |
| dic ={} | |
| for i in l: | |
| dic[i] = dic[i] +1 if i in dic else 1 | |
| out = [ v % 2 for v in dic.values()] | |
| return sum(out)<=1 and 'YES' or 'NO' | |
| sys.stdout.write( pali(sys.stdin.readline())) |
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