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#include<cstdio>
#include<cmath>
#include<cstdlib>
#define nmax 50000
struct eu{int x,y;};
eu vcc[50001];
int v[50001],vc[50001],i,j,n,m,x,y,lin,col,lm,cm,s1,s2;
int main ()
{
freopen("tribute.in","r",stdin);
freopen("tribute.out","w",stdout);
scanf("%d%d%d",&n,&lin,&col);
for(i=1;i<=n;i++)
{
scanf("%d%d",&vcc[i].x,&vcc[i].y);
v[vcc[i].x]++;
vc[vcc[i].y]++;
s1=s1+vcc[i].x;
s2=s2+vcc[i].y;
}
/*for(i=1;i<=nmax;i++)
{
v[i]=v[i]+v[i-1];
vc[i]=vc[i]+vc[i-1];
}*/
int difmax=0,dm1=0,poz,poz1,poz2,poz3;
/*for(i=0;i+lin<=nmax;i++)
if(v[i+lin]-v[i]>=difmax)
{
difmax=v[i+lin]-v[i];
poz=i;
}
for(i=0;i+col<=nmax;i++)
if(vc[i+col]-vc[i]>=dm1)
{
dm1=vc[i+col]-vc[i];
poz1=i;
}*/
poz=s1/n;
poz1=s2/n;
poz-=lin/2;
poz1-=col/2;
int min=2000000000,min1=200000000;
int k1=poz,k2=poz1;
for(j=k1-50;j<=k1+50;j++)
{
int s=0;
poz=j;
poz2=poz+lin;
poz3=poz1+col;
for(i=1;i<=n;i++)
{
if(vcc[i].x<=poz)
s+=poz-vcc[i].x;
if(vcc[i].x>=poz2)
s+=vcc[i].x-poz2;
/*if(vcc[i].y<=poz1)
s+=poz1-vcc[i].y;
if(vcc[i].y>=poz3)
s+=(-poz3+vcc[i].y);*/
}
if(s<min)
min=s;
}
for(int l=k2-50;l<=k2+50;l++)
{
int s=0;
poz1=l;
poz2=poz+lin;
poz3=poz1+col;
for(i=1;i<=n;i++)
{
/*if(vcc[i].x<=poz)
s+=poz-vcc[i].x;
if(vcc[i].x>=poz2)
s+=vcc[i].x-poz2;*/
if(vcc[i].y<=poz1)
s+=poz1-vcc[i].y;
if(vcc[i].y>=poz3)
s+=(-poz3+vcc[i].y);
}
if(s<min1)
min1=s;
}
printf("%d",min+min1);
return 0;
}