#include<iostream> #include<cstdio> using namespace std; int main(){ int i,n,m,begin=0,end=110,f=30; cin>>n; int a[n+1]; for (i=1;i<=n;i++) cin>>a[i]; cin>>m; for (i=1;i<=n;i++){ if(a[i]<=end+f){ begin++; } } cout<<begin<<" "; return 0; }