tj

#include <bits/stdc++.h>
using namespace std;
string s,ans;
int t,len;
int main(){
cin>>s>>t;
while(t--){
len = s.size();
ans="";
for(int i=0;i<=len-1;i++){
int j =i+1,cnt=1;
while(s[i]==s[j]){
j++;
cnt++;
}
ans+=cnt+'0';
ans+=s[i];
i=j-1;
}
s=ans;
}
cout<<s<<endl;
return 0;
}