#include <iostream>
#include <bits/stdc++.h>

using namespace std;
int main(int argc, char** argv) {
	string ans[10];
	for (int i = 0;i < 10;i ++) {
		ans[i] = "";
	}
	int n;
	cin>>n;
	char a[1000000];
	for (int i = 1;i <= n;i ++) {
		cin>>a[i];
		switch (a[i]) {
			case '0':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "X.X.";
				ans[3] = ans[3] + "X.X.";
				ans[4] = ans[4] + "X.X.";
				ans[5] = ans[5] + "XXX.";
				break;
			case '1':
				ans[1] = ans[1] + "..X.";
				ans[2] = ans[2] + "..X.";
				ans[3] = ans[3] + "..X.";
				ans[4] = ans[4] + "..X.";
				ans[5] = ans[5] + "..X.";
				break;
			case '2':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "..X.";
				ans[3] = ans[3] + "XXX.";
				ans[4] = ans[4] + "X...";
				ans[5] = ans[5] + "XXX.";	
				break;
			case '3':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "..X.";
				ans[3] = ans[3] + "XXX.";
				ans[4] = ans[4] + "..X.";
				ans[5] = ans[5] + "XXX.";
				break;
			case '4':
				ans[1] = ans[1] + "X.X.";
				ans[2] = ans[2] + "X.X.";
				ans[3] = ans[3] + "XXX.";
				ans[4] = ans[4] + "..X.";
				ans[5] = ans[5] + "..X.";
				break;
			case '5':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "X...";
				ans[3] = ans[3] + "XXX.";
				ans[4] = ans[4] + "..X.";
				ans[5] = ans[5] + "XXX.";
				break;
			case '6':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "X...";
				ans[3] = ans[3] + "XXX.";
				ans[4] = ans[4] + "X.X.";
				ans[5] = ans[5] + "XXX.";
				break;
			case '7':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "..X.";
				ans[3] = ans[3] + "..X.";
				ans[4] = ans[4] + "..X.";
				ans[5] = ans[5] + "..X.";
				break;
			case '8':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "X.X.";
				ans[3] = ans[3] + "XXX.";
				ans[4] = ans[4] + "X.X.";
				ans[5] = ans[5] + "XXX.";
				break;
			case '9':
				ans[1] = ans[1] + "XXX.";
				ans[2] = ans[2] + "X.X.";
				ans[3] = ans[3] + "XXX.";
				ans[4] = ans[4] + "..X.";
				ans[5] = ans[5] + "XXX.";
				break;
			default:
				break;
		}
	}
	//output.
	for (int i = 1;i <= n;i ++) {
		ans[i] = ans[i].substr(0,ans[i].length() - 1);
		cout<<ans[i]<<endl;
	}
	return 0;
}

在本地运行的时候，当第一个数字超过10时，提示Segmentation Fault，不知道是哪里出问题了。