include<stdio.h>

int main(){

int a,b,c,d,e,f,g,h,i,j,k,l,m,n;
scanf("%d %d %d %d %d %d %d %d %d %d\n%d ",&a,&b,&c,&d,&e,&f,&g,&h,&i,&j,&k);
l=30;
m=k+l;
n=0;

if(m>=a){n=n+1;}
if(m>=b){n=n+1;}
if(m>=c){n=n+1;}
if(m>=d){n=n+1;}
if(m>=e){n=n+1;}
if(m>=f){n=n+1;}
if(m>=g){n=n+1;}
if(m>=h){n=n+1;}
if(m>=i){n=n+1;}
if(m>=j){n=n+1;}
printf("%d",n);
return 0;}