#include <bits/stdc++.h>
using namespace std;
const long long MOD = 1e9 + 7;
int main(int argc, char const *argv[]) {
  string a;
  cin >> a;
  long long n = a.length();
  char p[n];
  p[0] = a[0];
  long long i;
  for (i = 1; i < n; i++) p[i] = (p[i - 1] > a[i]) ? a[i] : p[i - 1];
  for (int i = 0; i < int(n); i++) {
    if (a[i] > p[i])
      cout << "Ann" << endl;
    else
      cout << "Mike" << endl;
  }
}
