#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
typedef long long ll;
typedef pair<ll, ll> ii;
typedef vector<ll> vi;
#include "wiring.h"
ll min_total_length(vector<int> r_g, vector<int> b_g) {
vi r, b;
for (int x : r_g)
r.pb(x);
for (int x : b_g)
b.pb(x);
int N = r.size();
int M = b.size();
map<int, ll> dp;
// dp[i][j]: min cost to connect first i red (exclusive)
// with first j blue (exclusive)
dp[0] = 0;
for (int i = 1; i <= N; i++) {
map<int, ll> newdp;
for (int j = 1; j <= M; j++) {
newdp[j] = 1e18;
if (newdp.find(j - 1) != dp.end())
newdp[j] = min(newdp[j], newdp[j - 1] + abs(r[i - 1] - b[j - 1]));
if (dp.find(j) != dp.end())
newdp[j] = min(newdp[j], dp[j] + abs(r[i - 1] - b[j - 1]));
if (dp.find(j - 1) != dp.end())
newdp[j] = min(newdp[j], dp[j - 1] + abs(r[i - 1] - b[j - 1]));
}
dp = newdp;
}
return dp[M];
}
