#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef tuple<ll, ll, ll> plll;
typedef vector<plll> vplll;
typedef pair<ll, ll> pll;
typedef vector<ll> vll;
typedef vector<pll> vpll;
typedef vector<vector<pll>> vvpll;
typedef vector<vector<ll>> vvll;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;
#define loop(i, s, e) for (ll i = (s); i < (e); ++i)
#define loopr(i, e, s) for (ll i = (e)-1; i >= (s); --i)
#define all(a) a.begin(), a.end()
const ll inf = 1e18;
const ll mod = 1e9;
ll ans = 0;
ll n;
int DistanceSum(int N, int *x, int *y) {
n=N;
loop(i,0,n) {
loop(j,i+1,n)ans+= (abs(x[i]-x[j]) + abs(y[j]-y[i]));
}
return ans;
}
/*
3
0 0
0 1
0 2
*/
