#include <iostream>
using namespace std;
int main(){
    int n, st, ed;  cin >> n >> st >> ed;
    st -- , ed -- ;
    int stx, sty;
    int edx, edy;
    stx = st / n;
    if(stx % 2 == 1)   sty = n - st % n - 1;
    else    sty = st % n;
    edx = ed / n;
    if(edx % 2 == 1)    edy = n - ed % n - 1;
    else    edy = ed % n;
    cout << abs(stx - edx) + abs(sty - edy) << endl;
    return 0;
}