#include<bits/stdc++.h>
using namespace std;
int main(){
  int i=0,n,s=0;
  int a[10]={0};
  for(i;i<=9;i++) cin>>a[i];
  cin>>n;
  for(i=0;i<=9;i++){
  if(a[i]<=n+30) s++; 
  }
  cout<<s;
return 0;
}

/**************************************************************
	Problem: 1388
	User: wtq001
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/