#include <bits/stdc++.h>
using namespace std;
const int MAX = 100000;
int main(){
  int N;
  cin >> N;
  vector<int> A(N);
  for (int i = 0; i < N; i++){
    cin >> A[i];
  }
  vector<int> pr(MAX + 1, -1);
  for (int i = 2; i <= MAX; i++){
    if (pr[i] == -1){
      for (int j = i; j <= MAX; j += i){
        pr[j] = i;
      }
    }
  }
  vector<int> B(N, 1);
  for (int i = 0; i < N; i++){
    while (A[i] > 1){
      int p = pr[A[i]];
      int X = 1;
      while (A[i] % p == 0){
        A[i] /= p;
        X *= p;
      }
      B[i] *= X / p * (p - 1);
    }
  }
  int cnt = 0;
  for (int i = 0; i < N; i++){
    while (B[i] > 1){
      B[i] /= pr[B[i]];
      cnt++;
    }
  }
  if (cnt % 2 == 0){
    cout << 'X' << endl;
  } else {
    cout << 'Y' << endl;
  }
}