#include <bits/stdc++.h>
using namespace std;
const int MOD = 1000000007;
const int nmax = 5012;
int n, cnt[5], res[5];
char c[nmax], a[nmax];
int main() {
  scanf("%d", &n);
  scanf("%s", c + 1);
  scanf("%s", a + 1);
  for (int i = 1; i <= n; ++i) {
    if (c[i] == '0') {
      if (a[i] == '0')
        ++cnt[1];
      else
        ++cnt[2];
    } else {
      if (a[i] == '0')
        ++cnt[3];
      else
        ++cnt[4];
    }
  }
  if (cnt[2] > n / 2 || cnt[3] > n / 2)
    printf("-1");
  else {
    if (cnt[4] / 2 + cnt[2] > n / 2) {
      res[4] = cnt[4] - (n / 2 - cnt[2]);
      res[2] = n / 2 - res[4];
    } else if (cnt[4] / 2 + cnt[3] > n / 2) {
      res[4] = (n / 2 - cnt[3]);
      res[3] = cnt[4] - res[4] * 2;
      res[2] = cnt[2];
      res[1] = cnt[1];
    } else {
      if (cnt[4] % 2 == 1) {
        if (cnt[1] == 0) {
          res[3] = cnt[3];
          res[4] = n / 2 - cnt[3];
        } else if (cnt[2] > 0) {
          res[2] = cnt[2] - 1;
          res[4] = (cnt[4] + 1) / 2;
        } else if (cnt[3] > 0) {
          res[3] = 1;
          res[4] = cnt[4] / 2;
          res[2] = cnt[2];
        } else {
          printf("-1");
          return 0;
        }
      } else {
        res[4] = cnt[4] / 2;
        res[2] = cnt[2];
      }
      res[1] = n / 2 - res[2] - res[3] - res[4];
    }
    for (int i = 1; i <= n; ++i) {
      if (c[i] == '0') {
        if (a[i] == '0') {
          if (res[1] > 0) {
            --res[1];
            printf("%d ", i);
          }
        } else {
          if (res[2] > 0) {
            --res[2];
            printf("%d ", i);
          }
        }
      } else {
        if (a[i] == '0') {
          if (res[3] > 0) {
            --res[3];
            printf("%d ", i);
          }
        } else {
          if (res[4] > 0) {
            --res[4];
            printf("%d ", i);
          }
        }
      }
    }
  }
  return 0;
}
