#include <bits/stdc++.h>
#include "wiring.h"
using namespace std;
#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
//#define int long long
using i64 = long long;
template <class F, class _S>
bool chmin(F &u, const _S &v){
bool flag = false;
if ( u > v ){
u = v; flag |= true;
}
return flag;
}
template <class F, class _S>
bool chmax(F &u, const _S &v){
bool flag = false;
if ( u < v ){
u = v; flag |= true;
}
return flag;
}
const i64 inf = 1e18;
i64 min_total_length(vector <int> r, vector <int> b){
int n = r.size(), m = b.size();
vector <vector<i64>> dp(n + 1, vector <i64> (m + 1, inf));
dp[0][0] = 0;
for ( int i = 1; i <= n; i++ ){
for ( int j = 1; j <= m; j++ ){
int x = abs(r[i - 1] - b[j - 1]);
dp[i][j] = min({dp[i - 1][j], dp[i][j - 1], dp[i - 1][j - 1]}) + x;
}
}
return dp[n][m];
}
