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