#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i,s,e) for (int i = s; i <= e; ++i)
#define rrep(i,s,e) for (int i = s; i >= e; --i)
#define pb push_back
#define pf push_front
#define fi first
#define se second
#define all(a) a.begin(), a.end()
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<char> vc;
typedef vector<ll> vll;
ll min_total_length(vi r, vi b) {
int n = r.size(), m = b.size();
ll dp[n+1][m+1] = {};
rep (i,1,n) rep (j,1,m) dp[i][j] = min(min(dp[i-1][j], dp[i][j-1]),dp[i-1][j-1])+abs(r[i-1]-b[j-1]);
return dp[n][m];
}
