include
using namespace std; int main() {
int a[11],b[11],c[11],d[11],e[11],i,h,sum=0;
for(i=1;i<=10;i++)cin>>a[i];
cin>>h;
for(i=1;i<=10;i++)
{
b[i]=c[i]=d[i]=e[i]=0;
if(h>=a[i]){b[i]=i;c[i]=a[i];sum++;}
if(h+30>=a[i]&&h<a[i]){d[i]=i;e[i]=a[i];sum++;}
}
cout<<sum<<endl;
return 0;
}