感谢无敌的海螺之星！！

#include <bits/stdc++.h>
using namespace std;
string s,ans;
int t,len; 
int main()
{
	cin>>s;
	cin>>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;
}