//In the name of God
#include <bits/stdc++.h>
#include "railroad.h"
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
const ll maxn = 2e5 + 100;
const ll maxk = 16;
const ll mod = 1e9 + 7;
const ll inf = 1e18;
#define fast_io ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io freopen("input.txt", "r+", stdin);freopen("output.txt", "w+", stdout);
#define pb push_back
#define Mp make_pair
#define F first
#define S second
#define Sz(x) ll((x).size())
#define all(x) (x).begin(), (x).end()
ll dp[maxk][1 << maxk];
ll solmask(vector<int> s, vector<int> t){
ll n = Sz(s);
for(ll i = 0; i < (1 << n); i++){
for(ll j = 0; j < n; j++){
if(!((i >> j) & 1)) continue;
ll x = i ^ (1 << j);
dp[j][i] = inf;
if(x == 0) dp[j][i] = 0;
for(ll k = 0; k < n; k++){
if((x >> k) & 1){
dp[j][i] = min(dp[j][i], dp[k][x] + max(0, t[j] - s[k]));
}
}
}
}
ll ans = inf;
for(ll i = 0; i < n; i++){
ans = min(ans, dp[i][(1 << n) - 1]);
}
return ans;
}
long long plan_roller_coaster(vector<int> s, vector<int> t) {
ll n = Sz(s);
if(n <= 16) return solmask(s, t);
return 0;
}
/*int main(){
fast_io;
return 0;
}*/
