#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c,d,e,f,g,h,i,j,t; cin>>a>>b>>c>>d>>e>>f>>g>>h>>i>>j>>t; int y=0; if(t+30>=a){ y=y+1; } if(t+30>=b){ y=y+1; } if(t+30>=c){ y=y+1; } if(t+30>=d){ y=y+1; } if(t+30>=e){ y=y+1; }if(t+30>=f){ y=y+1; }if(t+30>=g){ y=y+1; }if(t+30>=h){ y=y+1; }if(t+30>=i){ y=y+1; }if(t+30>=j){ y=y+1; } cout<<y; return 0; }