print('YNEOS'[input().count('x')>7::2]) print('YNEOS'[input().count('x')>7::2]) print 'YNEOS'[input().count('x')>7::2] 'YNEOS' input().count('x')>7::2 input().count('x')>7 input().count('x') ().count () input count 'x' 7 2
print('YNEOS'[input().count('x')>7::2])