#include "wiring.h"
#include<vector>
#include<iostream>
#include<algorithm>
#include<utility>
using namespace std;
#define Int long long
#define rep(i,a,b) for(Int i=a; i<(Int)b; i++)
#define V vector
#define nl '\n'
#define _ << " " <<
#define dbg(x) cout << "?" << #x << " : " << x << endl;
const Int INF = 1e18;
const Int N = 2e5+5;
Int n, m;
V<Int> a, t;
Int prf[N];
Int rgsum(Int l,Int r){
return prf[r] - prf[l-1];
}
Int dp[N];
Int min_total_length(V<int> red,V<int> blue){
n = red.size(); m = blue.size();
a = t = {-1};
{
Int i=0, j=0;
while(i<n && j<m){
if(red[i] < blue[j]){
a.push_back(red[i++]); t.push_back(0);
}
else{
a.push_back(blue[j++]); t.push_back(1);
}
}
while(i<n){
a.push_back(red[i++]); t.push_back(0);
}
while(j<m){
a.push_back(blue[j++]); t.push_back(1);
}
}
// cout << "a[] ";
rep(i,1,n+m+1){
prf[i] = prf[i-1] + a[i];
// cout << a[i] << " ";
}
// cout << nl;
dp[0] = 0;
rep(i,1,n+m+1){
// dbg(a[i]);
dp[i] = INF;
Int k = i;
while(t[k]==t[i]) k--;
if(k==0) continue;
for(Int j=k; t[j]==t[k]; j--){
dp[i] = min({
dp[i],
min(dp[j-1],dp[j])
+ (k-j+1)*a[k]-rgsum(j,k)
+ max(k-j+1,i-k)*(a[k+1]-a[k])
+ (i-k)*a[i] - rgsum(k+1,i)
});
}
// dbg(dp[i]);
// cout << nl;
}
Int ans = dp[n+m];
return ans;
}
