#include <bits/stdc++.h>
using namespace std;
int res[50010], cot;
int main() {
  string a, b;
  int n;
  cin >> n;
  cin >> a;
  cin >> b;
  int s1, s2, s3;
  s1 = s2 = s3 = 0;
  int sa = 0, sb = 0;
  for (int i = 0; i < n; i++) {
    if (a[i] == '1') sa++;
    if (b[i] == '1') sb++;
    if (a[i] == '1' && b[i] == '1')
      s3++;
    else if (a[i] == '1')
      s1++;
    else if (b[i] == '1')
      s2++;
  }
  int ans[5];
  int flag = -1, s4 = n - s1 - s2 - s3;
  for (int i = 0; flag == -1 && i <= min(s3, n / 2); i++) {
    int res1 = i, res2 = (s3 - i);
    if (res1 + s1 < res2) continue;
    if (res2 + s2 < res1) continue;
    memset(ans, 0, sizeof ans);
    ans[3] += res1;
    int ss1 = s1, ss2 = s2;
    if (res1 < res2) {
      ss1 -= (res2 - res1);
      ans[1] += res2 - res1;
      res1 = res2;
      int temp = min(ss1, ss2);
      ans[1] += temp;
      ss1 -= temp;
      ss2 -= temp;
      if (s4 >= max(ss1, ss2)) {
        if (ss1) {
          ans[4] += (s4 + ss1) / 2;
        } else {
          ans[2] += ss2;
          ans[4] += (s4 - (s4 + ss2) / 2);
        }
        flag = 1;
      }
    } else {
      ss2 -= (res1 - res2);
      res2 = res1;
      int temp = min(ss1, ss2);
      ans[1] += temp;
      ss1 -= temp;
      ss2 -= temp;
      if (s4 >= max(ss1, ss2)) {
        if (ss1) {
          ans[4] += (s4 + ss1) / 2;
        } else {
          ans[2] += ss2;
          ans[4] += (s4 - (s4 + ss2) / 2);
        }
        flag = 1;
      }
    }
  }
  if (flag == -1)
    puts("-1");
  else {
    for (int i = 0; i < n; i++) {
      if (a[i] == '1' && b[i] == '1' && ans[3]) {
        res[++cot] = i + 1;
        ans[3]--;
        continue;
      }
      if (a[i] == '1' && b[i] == '0' && ans[1]) {
        res[++cot] = i + 1;
        ans[1]--;
        continue;
      }
      if (a[i] == '0' && b[i] == '1' && ans[2]) {
        res[++cot] = i + 1;
        ans[2]--;
        continue;
      }
      if (a[i] == '0' && b[i] == '0' && ans[4]) {
        res[++cot] = i + 1;
        ans[4]--;
        continue;
      }
    }
    for (int i = 1; i <= cot; i++) cout << res[i] << ' ';
    cout << endl;
  }
  return 0;
}
