#include "wiring.h"
#include <set>
using namespace std;
#define INF 0x7f7f7f7f
bool chk[100005];
long long min_total_length(std::vector<int> r, std::vector<int> b) {
if(r.size() > b.size())
swap(r, b);
int n = (int)r.size(), m = (int)b.size();
set<int> st;
for(int i = 0; i < m; i++)
st.insert(b[i]);
long long ans = 0;
for(int i = 0; i < n; i++)
{
auto it = st.lower_bound(r[i]);
int lval = INF, rval = INF;
if(it != st.end())
rval = *it-r[i];
if(it != st.begin())
{
it = prev(it);
lval = r[i]-*it;
}
ans += min(lval, rval);
if(lval <= rval)
st.erase(-lval+r[i]);
else
st.erase(rval+r[i]);
}
for(int i = 0; i < m; i++)
{
if(st.find(b[i]) == st.end())
continue;
int lval = INF, rval = INF;
auto it = lower_bound(r.begin(), r.end(), b[i]);
if(it != r.end())
rval = *it-b[i];
if(it != r.begin())
{
it = prev(it);
lval = b[i]-*it;
}
ans += min(lval, rval);
}
return ans;
}
