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 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')