#include <bits/stdc++.h>
using namespace std;
int a[1000010];
int main(){
int n;
cin>>n;
int x;
for(int i=0;i<n;i++){
cin>>a[i];
}
cin>>x;
int l=0,r=n-1;
int small=1;
while(l<=r){
int mid=(l+r)/2;
if(a[mid]>=x){
small=mid;
r=mid-1;
}else{
l=mid+1;
}
}
cout<<small;
return 0;
}
