using?namespace?std;
int?a[23];
int?main()
{
for?(int?i=1;i<=10;i++)?cin>>a[i];
int?k;cin>>k;
int?l=0,r=11,mid;
while?(l+1!=r)
{
mid=(l+r)>>1;
if?(a[mid]<k)?l=mid;else?if?(a[mid]>k)?r=mid;else?break;
}
if?(a[mid]==k)?cout<<"Yes";else?cout<<"No";
return?0;
}