package main

import . "fmt"

func main() {
	var n int
	Scan(&n)
	xx:=make([]int,302)
	yy:=make([]int,302)
	var mx,my int
	var sx,sy int
	for i:=0;i<n;i++ {
		var x,y int
		Scan(&x,&y)
		xx[x]++
		yy[y]++
		sx+=x
		sy+=y
	}
	mx,my=sx,sy
	for i,c:=range xx[:301] {
		xx[i+1]+=c
		yy[i+1]+=yy[i]
		sx+=c*2-n
		sy+=yy[i]*2-n
		if sx<mx {
			mx=sx
		}
		if sy<my {
			my=sy
		}
	} 
	Println(mx+my)
}