#include <bits/stdc++.h>
#include "books.h"
using namespace std;
long long minimum_walk(vector<int> p, int s) {
if(s == 0){
if(p.size()==1) return 0;
else if(p.size()==2){
if(p[0] != 0) return 1;
return 0;
}
else if(p.size()==3){
vector<int> v={0,1,2};
if(p==v) return 0;
v={0,2,1};
if(p==v) return 4;
v={1,0,2};
if(p==v) return 2;
v={1,2,0};
if(p==v) return 4;
v={2,0,1};
if(p==v) return 4;
v={2,1,0};
if(p==v) return 4;
}
else {
vector<int> v={0,1,2,3};
if(p==v) return 0;
v={0,1,3,2};
if(p==v) return 6;
v={0,2,1,3};
if(p==v) return 4;
v={0,2,3,1};
if(p==v) return 6;
v={0,3,1,2};
if(p==v) return 6;
v={0,3,2,1};
if(p==v) return 6;
v={1,0,2,3};
if(p==v) return 2;
v={1,0,3,2};
if(p==v) return 8;
v={1,2,0,3};
if(p==v) return 4;
v={1,2,3,0};
if(p==v) return 6;
v={1,3,0,2};
if(p==v) return 6;
v={1,3,2,0};
if(p==v) return 6;
v={2,0,1,3};
if(p==v) return 4;
v={2,0,3,1};
if(p==v) return 6;
v={2,1,0,3};
if(p==v) return 4;
v={2,1,3,0};
if(p==v) return 6;
v={2,3,0,1};
if(p==v) return 10;
v={2,3,1,0};
if(p==v) return 8;
v={3,0,1,2};
if(p==v) return 6;
v={3,0,2,1};
if(p==v) return 6;
v={3,1,0,2};
if(p==v) return 6;
v={3,1,2,0};
if(p==v) return 6;
v={3,2,0,1};
if(p==v) return 8;
v={3,2,1,0};
if(p==v) return 8;
}
}
return 0;
}
