#include "wiring.h"
using namespace std;
#define INF 0x7f7f7f7f
bool chk[100005];
long long min_total_length(std::vector<int> r, std::vector<int> b) {
int n = (int)r.size(), m = (int)b.size();
long long ans = 0;
for(int i = 0; i < n; i++)
{
int lval = INF, rval = INF, lpos = -1, rpos = -1;
auto it = lower_bound(b.begin(), b.end(), r[i]);
if(it != b.end())
{
rval = *it-r[i];
rpos = it-b.begin();
}
if(it != b.begin())
{
it = prev(it);
lval = r[i]-*it;
lpos = it-b.begin();
}
if(lval < rval)
{
ans += lval;
chk[lpos] = 1;
}
else if(lval > rval)
{
ans += rval;
chk[rpos] = 1;
}
else
{
ans += lval;
if(!chk[lpos] && chk[rpos])
chk[lpos] = 1;
else if(chk[lpos] && !chk[rpos])
chk[rpos] = 1;
else
chk[lpos] = 1;
}
}
for(int i = 0; i < m; i++)
{
if(chk[i])
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;
}
