#pragma GCC optimize ("Ofast")
#include<bits/stdc++.h>
using namespace std;
void *wmem;
char memarr[96000000];
template<class T> inline void walloc1d(T **arr, int x, void **mem = &wmem){
  static int skip[16] = {0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1};
  (*mem) = (void*)( ((char*)(*mem)) + skip[((unsigned long long)(*mem)) & 15] );
  (*arr)=(T*)(*mem);
  (*mem)=((*arr)+x);
}
template<class T1> void sortA_L(int N, T1 a[], void *mem = wmem){
  sort(a, a+N);
}
template<class T1, class T2, class T3> void sortA_L(int N, T1 a[], T2 b[], T3 c[], void *mem = wmem){
  int i;
  pair<T1, pair<T2, T3> > *arr;
  walloc1d(&arr, N, &mem);
  for(i=(0);i<(N);i++){
    arr[i].first = a[i];
    arr[i].second.first = b[i];
    arr[i].second.second = c[i];
  }
  sort(arr, arr+N);
  for(i=(0);i<(N);i++){
    a[i] = arr[i].first;
    b[i] = arr[i].second.first;
    c[i] = arr[i].second.second;
  }
}
template<class T1, class T2, class T3, class T4> void sortA_L(int N, T1 a[], T2 b[], T3 c[], T4 d[], void *mem = wmem){
  int i;
  pair<pair<T1, T2>, pair<T3, T4> > *arr;
  walloc1d(&arr, N, &mem);
  for(i=(0);i<(N);i++){
    arr[i].first.first = a[i];
    arr[i].first.second = b[i];
    arr[i].second.first = c[i];
    arr[i].second.second = d[i];
  }
  sort(arr, arr+N);
  for(i=(0);i<(N);i++){
    a[i] = arr[i].first.first;
    b[i] = arr[i].first.second;
    c[i] = arr[i].second.first;
    d[i] = arr[i].second.second;
  }
}
inline int my_getchar_unlocked(){
  static char buf[1048576];
  static int s = 1048576;
  static int e = 1048576;
  if(s == e && e == 1048576){
    e = fread_unlocked(buf, 1, 1048576, stdin);
    s = 0;
  }
  if(s == e){
    return EOF;
  }
  return buf[s++];
}
inline void rd(int &x){
  int k;
  int m=0;
  x=0;
  for(;;){
    k = my_getchar_unlocked();
    if(k=='-'){
      m=1;
      break;
    }
    if('0'<=k&&k<='9'){
      x=k-'0';
      break;
    }
  }
  for(;;){
    k = my_getchar_unlocked();
    if(k<'0'||k>'9'){
      break;
    }
    x=x*10+k-'0';
  }
  if(m){
    x=-x;
  }
}
struct MY_WRITER{
  char buf[1048576];
  int s;
  int e;
  MY_WRITER(){
    s = 0;
    e = 1048576;
  }
  ~MY_WRITER(){
    if(s){
      fwrite_unlocked(buf, 1, s, stdout);
    }
  }
}
;
MY_WRITER MY_WRITER_VAR;
void my_putchar_unlocked(int a){
  if(MY_WRITER_VAR.s == MY_WRITER_VAR.e){
    fwrite_unlocked(MY_WRITER_VAR.buf, 1, MY_WRITER_VAR.s, stdout);
    MY_WRITER_VAR.s = 0;
  }
  MY_WRITER_VAR.buf[MY_WRITER_VAR.s++] = a;
}
inline void wt_L(char a){
  my_putchar_unlocked(a);
}
inline void wt_L(int x){
  int s=0;
  int m=0;
  char f[10];
  if(x<0){
    m=1;
    x=-x;
  }
  while(x){
    f[s++]=x%10;
    x/=10;
  }
  if(!s){
    f[s++]=0;
  }
  if(m){
    my_putchar_unlocked('-');
  }
  while(s--){
    my_putchar_unlocked(f[s]+'0');
  }
}
template<class T> inline T pow2_L(T a){
  return a*a;
}
int N;
int X[300000];
int Y[300000];
int ind[300000];
long long val[300000];
int ress;
int res[300000];
bool ok(int i, int j){
  return (pow2_L((X[i]-X[j])))+(pow2_L((Y[i]-Y[j])))>= 100;
}
int main(){
  int i;
  wmem = memarr;
  rd(N);
  {
    int Lj4PdHRW;
    for(Lj4PdHRW=(0);Lj4PdHRW<(N);Lj4PdHRW++){
      rd(X[Lj4PdHRW]);
      rd(Y[Lj4PdHRW]);
    }
  }
  for(i=(0);i<(N);i++){
    ind[i] = i;
  }
  for(i=(0);i<(N);i++){
    val[i] = (long long) X[i] / 10 * 1000000000 + Y[i];
  }
  sortA_L(N, val, X, Y, ind);
  for(i=(0);i<(N);i++){
    int j;
    for(j=(0);j<(ress);j++){
      if(!ok(i,res[j])){
        goto xr20shxY;
      }
    }
    res[ress++] = i;
    if(ress*90 >= N){
      break;
    }
    xr20shxY:;
  }
  for(i=(0);i<(ress);i++){
    res[i] = ind[res[i]];
  }
  sortA_L(ress,res);
  wt_L(ress);
  wt_L('\n');
  {
    int a2conNHc;
    if(ress==0){
      wt_L('\n');
    }
    else{
      for(a2conNHc=(0);a2conNHc<(ress-1);a2conNHc++){
        wt_L(res[a2conNHc]+1);
        wt_L(' ');
      }
      wt_L(res[a2conNHc]+1);
      wt_L('\n');
    }
  }
  return 0;
}
// cLay varsion 20200509-1

// --- original code ---
// int N, X[3d5], Y[3d5], ind[3d5];
// ll val[3d5];
// int ress, res[3d5];
// 
// bool ok(int i, int j){
//   return (X[i]-X[j])**2 + (Y[i]-Y[j])**2 >= 100;
// }
// 
// {
//   rd(N,(X,Y)(N));
//   rep(i,N) ind[i] = i;
//   rep(i,N) val[i] = (ll) X[i] / 10 * 1d9 + Y[i];
//   sortA(N, val, X, Y, ind);
//   rep(i,N){
//     rep(j,ress) if(!ok(i,res[j])) break_continue;
//     res[ress++] = i;
// //    wt(X[i],Y[i]);
//     if(ress*90 >= N) break;
//   }
//   rep(i,ress) res[i] = ind[res[i]];
//   sortA(ress,res);
//   wt(ress);
//   wt(res(ress)+1);
// }