#include <bits/stdc++.h>   using namespace std;   int a[100004];   int main() {     int n, no;     cin >> n >> a[0];     a[0] = (a[0] - 1) % 2;     for (int i = 1; i < n; i++) {       cin >> no;       a[i] = (a[i - 1] + (no - 1)) % 2;     }     for (int i = 0; i < n; i++) {       if (a[i] == 1) {         cout <<  1 n ;       } else         cout <<  2 n ;     }     return 0;   }   