#include "railroad.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pl;
#ifdef dremix
#define p(x) cerr<<#x<<" = "<<x<<endl;
#define p2(x,y) cerr<<#x<<" , "<<#y<<" = "<<x<<" , "<<y<<endl;
#define pp(x) cerr<<#x<<" = ("<<x.F<<" - "<<x.S<<")"<<endl;
#define pv(x) cerr<<#x<<" = {";for(auto u : x)cerr<<u<<", ";cerr<<"}"<<endl;
#define ppv(x) cerr<<#x<<" = {";for(auto u : x)cerr<<u.F<<"-"<<u.S<<", ";cerr<<"}"<<endl;
#else
#define p(x) {}
#define p2(x,y) {}
#define pp(x) {}
#define pv(x) {}
#define ppv(x) {}
#endif
#define endl '\n'
#define all(x) (x).begin(),(x).end()
#define F first
#define S second
const int N = 3e5+5;
const int MOD = 1e9+7;
const ll INF = 1e18+5;
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
int n = (int) s.size();
vector<int> idx(n);
iota(all(idx),0);
ll ans = INF;
int i;
do{
int curr = 1;
ll res = 0;
for(i=0;i<n;i++){
int j = idx[i];
res += max(0,curr - s[j]);
curr = t[j];
}
ans = min(ans,res);
}while(next_permutation(all(idx)));
return ans;
}
