a = list(map(int, input().split()))
key = int(input())
cnt=0
n=len(a)
i=0;j=(len(a)-1)//2
while i<=j:
    m=(i+j)//2
    cnt=cnt+1
    if a[m]==key:
        break
    elif a[m]<key:
        i=m+1
    else:
        j=m-1
if i<=j:
    print("YES")
    print(cnt)
else:
    if a[-i]==key:
        cnt=cnt+1
        print("YES")
        print(cnt)
    else:
        print("NO")

😄