#include <bits/stdc++.h>
//#include "wiring.h"
using namespace std;
using ll = long long;
using vb = vector<bool>;
using vvb = vector<vb>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vc = vector<char>;
using vvc = vector<vc>;
using vs = vector<string>;
const ll mod = 1e9 + 7,inf = 1e18;
#define pb push_back
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
ll min_total_length(vi a,vi b)
{
int n = (int)a.size(),m = (int)b.size();
vvl dp(n,vl(m));
for (int i = 0;i<n;i++){
for (int j = 0;j<m;j++){
if (i == 0 && j == 0){dp[i][j] = abs(a[i] - b[j]);continue;}
dp[i][j] = 1ll * abs(1ll * a[i] - 1ll * b[j]) + min(
{
i >= 1 && j >= 1? dp[i - 1][j - 1] : inf,
i >= 1 ? dp[i - 1][j] : inf,
j >= 1 ? dp[i][j - 1] : inf
}
);
}
}
return dp[n - 1][m - 1];
}
