1140

    #include <bits/stdc++.h>
using namespace std;

int main()
{
	int d,n;
	cin>>d>>n;
	n--;
	string s;
	s.push_back(d+'0');
	while(n--) {
		string s1;//描述s
		for(int i=0;s[i];i++){
			int cnt=1;
			while(s[i]==s[i+1])
			{cnt++;i++;}
			s1.push_back(s[i]);
			s1.push_back('0'+cnt);
		}
		
		s=s1;
	}
	cout<<s;

	return 0;
}