```cf
#include<bits/stdc++.h>
using namespace std;
int a[250]={};
string b;
int main()
{
	int s;
	cin>>b;
	cin>>s;
	int n=b.size();
	for(int i=0;i<=b.size();i++) a[i+1]=b[i]-'0';
	for(int i=1;i<=s;i++)
	{
		for(int j=1;j<=n;j++)
		{
			if(a[j]>a[j+1])
			{
				//cout<<a[j]<<"  "<<a[j+1]<<"  "<<endl;
				for(int k=j;k<=n;k++) a[k]=a[k+1];
				a[n]=0;
				n--;
				break;
			}
		}
	}
	//cout<<endl;
	int l=1;
	while (a[l]==0) l++;
	for(int i=l;i<=n;i++)
	{
		cout<<a[i];
	}
 	return 0;
}
//13