#include<iostream>
#include<stdio.h>
#include<iomanip>
#include<math.h>
#include<string.h>
#define ll longlong
const int N=1e5+10;
const int INT=0x3f3f3f3f;
using namespace std;
int main()
{
    int n, pos, l, r;
    cin >> n >> pos >> l >> r;
    if (l == 1 && r == n) {
        cout << 0 << endl;
        return 0;
    }
    if (l == 1) {
        int time = abs(pos - r) + 1; 
        cout << time << endl;
        return 0;
    }
    if (r == n) {
        int time = abs(pos - l) + 1; 
        cout << time << endl;
        return 0;
    }
    int option1 = abs(pos - l) + 1 + (r - l) + 1; 
    int option2 = abs(pos - r) + 1 + (r - l) + 1; 
    int minTime = min(option1, option2);
    cout << minTime << endl;
    return 0;
}