#include<bits/stdc++.h>
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
using namespace std;
int a[200005];
int b[200005];
vector<int>id[200005];
vector<int>v;
vector<pair<int,int>>op;
int n;
struct fenwick{
int info[100005];
void upd(int id,int val){
for(int i=id;i<=n;i+=i&-i)info[i]=max(info[i],val);
}
int fans(int id){
int ans=0;
for(int i=id;i>0;i-=i&-i)ans=max(ans,info[i]);
return ans;
}
}fw;
int qr[5005][5005];
int dp[5005];
int mx[20][100005];
int lg[100005];
int fmx(int l,int r){
int x=lg[r-l+1];
//cerr<<"qr:"<<l<<' '<<r<<" "<<max(mx[x][l],mx[x][r-(1<<x)])<<"\n";
return max(mx[x][l],mx[x][r-(1<<x)+1]);
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
cin>>n;
for(int i=1;i<=n;i++)cin>>a[i],v.push_back(a[i]);
for(int i=1;i<=n;i++)cin>>b[i],v.push_back(b[i]);
int val=b[1];
int yes=0;
int cnt=0;
int ans=0;
for(int i=1;i<=n;i++){
if(a[i]==val)yes=1;
else if(a[i]>val){
if(yes)ans+=cnt;
cnt=0;
yes=0;
}
if(a[i]<=val)cnt++;
}
if(yes)ans+=cnt;
cout<<ans;
return 0;
}
