#include<iostream> using namespace std; int main(){ int luck=0,i; int a[11],b,c[10]; for(i=0;i<10;i++){ cin>>a[i]; c[i]=a[i]; } cin>>b; for(int n=0;n<5;n++){ if(b>=c[i]||(b+30)>=c[i]){ luck++; c[i]=a[i+1]; }else break; } cout<<luck; return 0; }