include<bits/stdc++.h>

using namespace std; int main(void){

int n,a[10],b=0;
for(int i=0;i<10;i++){
	cin>>a[i];
}
cin>>n;
n+=30;

for(int i=0;i<10;i++){
	if(n>=a[i]){
		b++;
	}
}

cout<<b;

}