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