#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif
long long plan_roller_coaster(vector<int> s, vector<int> t) {
int n = (int) s.size();
const long long inf = (long long) 1e18;
vector<vector<long long>> dp(1 << n, vector<long long>(n, inf));
for (int i = 0; i < n; i++) {
dp[1 << i][i] = 0;
}
for (int mask = 1; mask < (1 << n); mask++) {
for (int i = 0; i < n; i++) {
if (~mask & (1 << i)) {
continue;
}
for (int j = 0; j < n; j++) {
if (mask & (1 << j)) {
continue;
}
int nmask = mask | (1 << j);
dp[nmask][j] = min(dp[nmask][j], dp[mask][i] + max(0, t[i] - s[j]));
}
}
}
return *min_element(dp.back().begin(), dp.back().end());
}
#ifdef tabr
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
debug(plan_roller_coaster({1, 4, 5, 6}, {7, 3, 8, 6}));
return 0;
}
#endif
