//#include "wiring.h"
#include <cstring>
#include <algorithm>
#include <vector>
#include <cstdio>
#define PB push_back
using namespace std;
typedef long long ll;
const int N = 210;
const ll OO = 1e18;
int n, m, a[N], b[N];
ll dp[N][N];
ll _abs(ll x) { return x < 0 ? -x : x; }
ll phi(int l, int r) {
if(l >= n && r >= m) { return 0; }
if(l >= n || r >= m) { return OO; }
if(dp[l][r] != -1) { return dp[l][r]; }
dp[l][r] = _abs(a[l] - b[r]) + min({phi(l + 1, r + 1), phi(l + 1, r), phi(l, r + 1)});
return dp[l][r];
}
ll long min_total_length(vector<int> av, vector<int> bv) {
memset(dp, -1, sizeof(dp));
n = av.size();
m = bv.size();
for(int i = 0; i < n; ++i) { a[i] = av[i]; }
for(int i = 0; i < m; ++i) { b[i] = bv[i]; }
return phi(0, 0);
}
