#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

    int p[1001];


int main() {
    int n; 

    cin >> n;
    
    
    cin >> hex; 
    for(int i = 0; i<n; i++)
        cin >> p[i];

    for(int i = 0; i<n; i++)
        if(p[i]>= 0x10 && p[i] <= 0x1f)
         cout << ".";
        else cout << "-";
        
    cout << endl;

    }