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+=1
    if key==a[m]:
        break
    if key%2==1:
        if a[m]%2==0:
            i=m+1
        else:
            if key>a[m]:
                i=m+1
            else:
                j=m-1
    else:
        if a[m]%2==1:
            j=m-1
        else:
            if key>a[m]:
                j=m-1
            else:
                i=m+1
if i<=j:
    print("YES")
    print(cnt)
else:
    print("NO")