백준 7571

#include
#include
using namespace std;

int n, m, ans;
int mx, my;
int ax[100000]; int ay[100000];
void init() {
cin >> n >> m;
for (int i = 0; i < m; i++) {
int x, y;
cin >> ax[i] >> ay[i];
}
sort(ax, ax + m);
sort(ay, ay + m);
mx = ax[m / 2];
my = ay[m / 2];
}

int main() {

init();
for (int i = 0; i < m; i++) {
	ans += abs(mx - ax[i]) + abs(my - ay[i]);
}
cout << ans;

}