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])