#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair <ll, ll> pii;
#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) (int)(v).size()
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
const int N = 2e5+7;
ll dp[N], pref[N], last[N];
ll min_total_length(vector<int> r, vector<int> b){
vector <pii> v;
int n = sz(r)+sz(b);
for(auto to : r)
v.pb(mp(to, 0));
for(auto to : b)
v.pb(mp(to, 1));
sort(all(v));
dp[0] = 1e18;
pref[0] = v[0].first;
last[0] = -1;
for(int i = 1; i < n; i++){
dp[i] = 1e18;
pref[i] = pref[i-1]+v[i].first;
last[i] = (v[i].second == v[i-1].second ? last[i-1] : i-1);
if(last[i] == -1) continue;
dp[i] = min(dp[i], dp[i-1]+v[i].first-v[last[i]].first);
if(last[last[i]] < last[i]-(i-last[i])+1){
dp[i] = min(dp[i], (pref[i] - pref[last[i]]) - (pref[last[i]] - pref[last[i]-(i-last[i])])
+(last[i]-(i-last[i]) < 0 ? 0 : dp[last[i]-(i-last[i])]));
}
}
return dp[n-1];
}
