#include "railroad.h"
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define inside sl<=l&&r<=sr
#define outside r<sl||sr<l
#define orta ((l+r)>>1)
#define INF 1000000000009
#define mod 1000000007
#define ppair(x); cerr << "(" << x.first << ", " << x.second << ")\n";
#define bas(x) #x << ": " << x << " "
#define prarr(x, n); cerr << #x << ": "; for(int qsd = 0; qsd < n; qsd++) cerr << x[qsd] << " "; cerr << "\n";
#define prarrv(x); cerr << #x << ": "; for(int qsd = 0; qsd < (int)x.size(); qsd++) cerr << x[qsd] << " "; cerr << "\n";
using namespace std;
typedef long long ll;
ll mat[16][16];
int n;
ll f(int node, int mask){
if (mask == ((1<<n)-1)){
return 0;
}
ll ans = INF;
for (int i = 0; i < n; i++){
if ((mask & (1<<i)) == 0){
ans = min(ans, f(i, mask|(1<<i)) + mat[node][i]);
}
}
return ans;
}
long long plan_roller_coaster(vector<int> s, vector<int> t) {
n = (int) s.size();
for (int i = 0; i < n; i++){
for (int j = 0; j < n; j++){
mat[i][j] = max(0, t[i] - s[j]);
//cout << mat[i][j] << " ";
}
//cout << endl;
}
//cout << endl;
ll ans = INF;
for (int i = 0; i < n; i++){
ans = min(ans, f(i, (1<<i)));
}
return ans;
}
