#include <bits/stdc++.h>
using namespace std;
int a[5001], c[5001];
int main() {
  int n, m, u, v;
  scanf("%d", &n);
  for (int i = 1; i <= n; ++i) {
    scanf("%1d", &c[i]);
  }
  for (int i = 1; i <= n; ++i) {
    scanf("%1d", &a[i]);
  }
  int flag1 = 0, flag2 = 0, flag3 = 0, flag4 = 0;
  int ans1 = 0, ans2 = 0, ans3 = 0, ans4 = 0;
  for (int i = 1; i <= n; ++i) {
    if (c[i] == 1) {
      if (a[i] == 1)
        flag3++;
      else
        flag1++;
    } else {
      if (a[i] == 1) {
        flag2++;
      } else {
        flag4++;
      }
    }
  }
  int t = n / 2;
  int flag = 0;
  for (int i = 0; i <= flag1; ++i) {
    ans1 = ans2 = ans3 = ans4 = 0;
    if (i > t) break;
    for (int j = 0; j <= flag3; ++j) {
      if (i + j > t) break;
      ans1 = i;
      ans3 = j;
      if (i + j - (flag3 - j) < 0) {
        continue;
      }
      ans2 = flag2 - (i + j - (flag3 - j));
      if (ans2 < 0) continue;
      ans4 = t - ans1 - ans2 - ans3;
      if (ans4 > flag4) continue;
      if (ans1 >= 0 && ans2 >= 0 && ans3 >= 0 && ans4 >= 0) {
        flag = 1;
        break;
      }
    }
    if (flag) break;
  }
  if (flag == 0) {
    printf("-1\n");
  } else {
    for (int i = 1; i <= n; ++i) {
      if (ans1 && c[i] == 1 && a[i] == 0) {
        printf("%d ", i);
        ans1--;
      } else if (ans2 && c[i] == 0 && a[i] == 1) {
        printf("%d ", i);
        ans2--;
      } else if (ans3 && c[i] == 1 && a[i] == 1) {
        printf("%d ", i);
        ans3--;
      } else if (ans4 && c[i] == 0 && a[i] == 0) {
        printf("%d ", i);
        ans4--;
      }
    }
    printf("\n");
  }
  return 0;
}
