#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ins insert
#define pb push_back
void solve(){
    int n;cin>>n;
    int a,b,c,d;cin>>a>>b>>c>>d;
    int l[n];
    for(int i=0;i<n;i++){
        cin>>l[i];
    }
    if(a==n||c==n){
        cout<<abs(a-c)<<endl;
    }
    else cout<<abs(c-a)+abs(d-b)<<endl;
}
int main() {
	int t=1;
    while(t--)solve();
}
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