Takahashi is competing in a sumo tournament. The tournament lasts for 15 days, during which he performs in one match per day. If he wins 8 or more matches, he can also participate in the next tournament.  The matches for the first k days have finished. You are given the results of Takahashi's matches as a string S consisting of `o` and `x`. If the i-th character in S is `o`, it means that Takahashi won the match on the i-th day; if that character is `x`, it means that Takahashi lost the match on the i-th day.  Print `YES` if there is a possibility that Takahashi can participate in the next tournament, and print `NO` if there is no such possibility.
n = str(input())
c = 0
for i in range(len(n)):
    if n[i] == "x":
        c += 1

if c >= 8:
    print("No")
else:
    print("Yes")
n = str(input())
c = 0
for i in range(len(n)):
    if n[i] == "x":
        c += 1

if c >= 8:
    print("NO")
else:
    print("YES")