题解

#include<bits/stdc++.h>
using namespace std;
string m,s;
int main(){
	cin>>m;
	int n;
	cin>>n;
	while(n--){
		char s1;
		for(int i=0;i<m.size();){
			int c=0;
			s1=m[i];
			while(s1==m[i]){
				i++;
				c++;
			}
			s+=(c+'0');
			s+=s1;
		}
		m=s;
		s="\0";
	}
	cout<<m<<endl;
    return 0;
}