#include<bits/stdc++.h> using namespace std; int b[1000000]; int main() { int c,g=0,k=0; for(int n=1; n<=10; n++) { cin>>b[n]; } cin>>c; g=c+30; for(int n=1; n<=10; n++) { if(b[n]>=g) { k++; } } cout<<k; return 0; }