#include <bits/stdc++.h>
#define pb push_back
#define int long long
using namespace std;
const int N=1e5+5;
int a[N],b[N];
signed main()
{
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
int n;
cin>>n;
for(int i=1;i<=n;++i) cin>>a[i];
for(int i=1;i<=n;++i) cin>>b[i];
int ans=0;
for(int i=1;i<=n;++i)
{
if(a[i]>b[1]) continue;
int j=i;
int mx=a[i];
while(j<n&&a[j+1]<=b[1]) {++j;mx=max(mx,a[j]);}
if(mx==b[1]) ans+=j-i+1;
i=j;
}
cout<<ans;
}
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