#include using namespace std; int main() { int a[10]; cin>>a[0]>>a[1]>>a[2]>>a[3]>>a[4]>>a[5]>>a[6]>>a[7]>>a[8]>>a[9]; int s,y=0; cin>>s; if(30+s>=a[0])y++; if(30+s>=a[1])y++; if(30+s>=a[2])y++; if(30+s>=a[3])y++; if(30+s>=a[4])y++; if(30+s>=a[5])y++; if(30+s>=a[6])y++; if(30+s>=a[7])y++; if(30+s>=a[8])y++; if(30+s>=a[9])y++; cout<<y; return 0; }