#include <bits/stdc++.h>
const int INF = 1e9, MOD = 1e9 + 7, ohara = 1e6 + 10;
const long long LINF = 1e18;
using namespace std;
long long n, cnt, ans, a, b, c, d, tmp, tmpp, m, h, w, x, y, sum, pos, k, q;
long double doua;
int dy[] = {1, 0, -1, 0};
int dx[] = {0, 1, 0, -1};
string alph("abcdefghijklmnopqrstuvwxyz"), s;
bool fl;
struct edge {
  int to, cost;
};
char dat[ohara];
int main(void) {
  cin.tie(0);
  cout.tie(0);
  ios::sync_with_stdio(false);
  cin >> s;
  dat[0] = s[0];
  for (long long i = (1); i < ((s).size()); i++) {
    dat[i] = min(dat[i - 1], s[i]);
  }
  for (long long(i) = 0; (i) < (int)((s).size()); (i)++) {
    if (s[i] > dat[i])
      cout << ("Ann") << endl;
    else
      cout << ("Mike") << endl;
  }
#pragma target("avx")
  return 0;
}
