//ZJU 1041 Transmitters

//2003.09.13 BY adai

#include <iostream>

#include <cmath>

using namespace std;

int main(void){

int i,j;

double rx,ry,r,tx,ty,temp;

while(1){

cin>>rx>>ry>>r;

if(r<=0) break;

int num;

cin>>num;

int* x=new int[num];

int* y=new int[num];

int t=0;

for(i=0;i<num;i++){

cin>>x[t]>>y[t];

if(pow(rx-x[t],2)+pow(ry-y[t],2)<=pow(r,2)) t++;

}

int max=0;

int left,right;

for(i=0;i<t;i++){

if(x[i]==rx&&y[i]==ry){

if(max==0) max=1;

continue;

}

tx=x[i];

ty=y[i];

left=right=1;

j=i;

while(1){

j++;

if(j>=t) j=0;

if(j==i) break;

if(x[j]==rx&&y[j]==ry){

left++;

right++;

continue;

}

temp=(y[j]-ry)*(tx-rx)-(x[j]-rx)*(ty-ry);

if(temp>=0) left++;

if(temp<=0) right++;

}

if(left>max) max=left;

if(right>max) max=right;

}

delete []x;

delete []y;

cout<<max<<endl;

}

return 0;

}