#include<iostream>
using namespace std;
int apples[19],s,tall;
int main(){
    for(int i=1;i<=10;i++) scanf("%d",apples+i);
    cin>>tall;
    for(int i=1;i<=10;i++){
        if(tall>=apples[i]-10) s++;
    }
    cout<<s;
    return 0;
}