include <stdio.h>

int main() {

int a,b,c[10],d;
d=0;
for(b=0;b<=9;b++)
{
	scanf("%d",&c[b]);
}
scanf("%d",&a);
a=a+30;
for(b=0;b<=9;b++)
{
	if(c[b]<=a)
	{
		d++;
	}
}
printf("%d ",d);

return 0;

}