#include "wiring.h"
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair < int, int > pii;
typedef pair < ll, ll > pll;
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define SZ(x) (int)x.size()
#define Mp make_pair
#define endl "\n"
#define fast_io ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const int N = 1e6 + 10;
const int LOG = 20;
const ll mod = 1e9 + 7;
const ll inf = 8e18;
ll min_total_length(vector < int > r, vector < int > b)
{
reverse(all(r));
ll ret = 0;
int n = SZ(r), m = SZ(b);
for(int i = 0; i < min(n, m); i ++)
{
ret += abs(r[i] - b[i]);
}
if(n > m)
{
for(int i = m; i < n; i ++) ret += b[0] - r[i];
}
else
{
for(int i = n; i < m; i ++) ret += b[i] - r[0];
}
return ret;
}
