#include "wiring.h"
//Challenge: Accepted
#include <iostream>
#include <algorithm>
#include <vector>
#include <utility>
#define ll long long
#define maxn 2005
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
using namespace std;
ll dp[maxn][maxn];
ll ab(ll x) {
return x > 0 ? x : -x;
}
const ll inf = 1LL<<60;
long long min_total_length(std::vector<int> r, std::vector<int> b) {
int n = r.size(), m = b.size();
for (int i = 0;i < n;i++) {
for (int j = 0;j < m;j++) {
dp[i][j] = inf;
ll cost = ab(r[i] - b[j]);
if (i == 0 && j == 0) dp[i][j] = cost;
else if (!j) dp[i][j] = dp[i - 1][j] + cost;
else if (!i) dp[i][j] = dp[i][j - 1] + cost;
else {
dp[i][j] = min(dp[i - 1][j], min(dp[i][j - 1], dp[i - 1][j - 1])) + cost;
}
}
}
return dp[n - 1][m - 1];
}
