#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	int a[10],b,i,count=0;
	for (b=0;b<10;b++)
	{
		cin>>a[b];
	}
		
	cin>>b;
	for (i=0;i<10;i++)
	{
		if(b>=a[i]||(b+30)>=a[i])
		{
			count++;
		}
	}
	cout<<count;
	return 0;
}