https://ac.nowcoder.com/acm/contest/322/E

题解：不说了，看代码。啥东西啊

/*
*@Author:   STZG
*@Language: C++
*/
#include <bits/stdc++.h>
#include<iostream>
#include<algorithm>
#include<cstdlib>
#include<cstring>
#include<cstdio>
#include<string>
#include<vector>
#include<bitset>
#include<queue>
#include<deque>
#include<stack>
#include<cmath>
#include<list>
#include<map>
#include<set>
//#define DEBUG
#define RI register int
using namespace std;
typedef long long ll;
//typedef __int128 lll;
const int N=1000000+10;
const int MOD=1e9+7;
const double PI = acos(-1.0);
const double EXP = 1E-8;
const int INF = 0x3f3f3f3f;
int t,n,m,k,q,ans;
int a;
char str[N];
void h(){
    int x=0;
    int y=0;
    char d=str[0];
    int cnt=0;
    char tmp[N];
    while(str[x]!='\0'){
        //cout<<str[x]<<d<<cnt<<endl;
        if(str[x]==d){
            x++;
            cnt++;
        }else{
            tmp[y++]='0'+cnt;
            tmp[y++]=d;

            d=str[x];
            x++;
            cnt=1;
        }
    }
    tmp[y++]='0'+cnt;
    tmp[y++]=d;

    tmp[y]='\0';
    strcpy(str,tmp);
}
int main()
{
#ifdef DEBUG
	freopen("input.in", "r", stdin);
	//freopen("output.out", "w", stdout);
#endif
    while(~scanf("%s",str)){
        scanf("%d",&n);
        if(n==1){
            cout << strlen(str)<<" "<<str << endl;
            continue;
        }
    n--;
    while(n--){
        h();
    }
    cout << strlen(str)<<" "<<str << endl;
    }
    
    //cout << "Hello world!" << endl;
    return 0;
}