//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first
#define b second
#define endl '\n'
#include "railroad.h"
llo dp[1<<17][17];
long long plan_roller_coaster(vector<int> ss,vector<int> tt) {
int n = (int) ss.size();
/* for(auto j:ss){
cout<<j<<",";
}
cout<<endl;
for(auto j:tt){
cout<<j<<",";
}
cout<<endl;*/
for(int i=1;i<(1<<n);i++){
for(int j=0;j<n;j++){
dp[i][j]=(llo)1e18;
if((1<<j)&i){
if(i-(1<<j)==0){
dp[i][j]=0;
continue;
}
for(int k=0;k<n;k++){
if(k!=j){
if((1<<k)&i){
/*if(i==1+8 and j==3){
cout<<k<<","<<tt[k]<<":"<<ss[j]<<endl;
}*/
dp[i][j]=min(dp[i][j],dp[i-(1<<j)][k]+max(tt[k]-ss[j],0));
}
}
}
}
}
}
llo ans=1e18;
// cout<<dp[1+(1<<3)][3]<<endl;
for(int i=0;i<n;i++){
ans=min(ans,dp[(1<<n)-1][i]);
// cout<<dp[(1<<n)-1][i]<<":";
}
// cout<<endl;
return ans;
}
