#include <bits/stdc++.h>  
using namespace std;
int h2,apple,h1[10];
int main(){
    for (int i=0;i<10;i++)
        cin>>h1[i];
    cin>>h2;
    h2+=30;
    for (int i=0;i<10;i++){
        if (h1[i]>h2)
            apple++;
    }
    cout<<apple;
    return 0;  
}