#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
#include <cstring>
#include <vector>
#include <cmath>
#include <ctime>
#include <algorithm>
#include <iomanip>
using namespace std;

int main() {
    //freopen("//xx.in","r",stdin);
    //freopen("//xx.out","w",stdout);
    string n;
    getline(cin,n);
    int s;
    cin>>s;
    int len=n.size();
    bool flag=false;
    for (int i=1;i<=s;i++)
    {
        for (int j=0;j<len-1;j++)
            if (n[j]>n[j+1])
            {
                for (int k=j;k<len-1;k++)
                {
                    n[k]=n[k+1];
                }
                break;
            }
        len--;
    }
    for (int i=0;i<=len-1;i++)
    {
        if (n[i]!='0') flag=true;
        if (flag) cout<<n[i];
    }
    //fclose(stdin);
    //fclose(stdout);
    //while (1);
    return 0;
}