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