#include <bits/stdc++.h>
using namespace std;
int main() {
  string str;
  cin >> str;
  cout << "Mike\n";
  int freq[26] = {0};
  freq[str[0] - 'a']++;
  for (int i = 1; i < str.length(); i++) {
    int val = 0;
    for (int j = 0; j < str[i] - 'a'; j++) {
      if (freq[j] > 0) {
        val = 1;
        break;
      }
    }
    freq[str[i] - 'a']++;
    if (val == 1) {
      cout << "Ann\n";
    } else {
      cout << "Mike\n";
    }
  }
  return 0;
}
