View Code of Problem 609

#include<iostream>
#include<cstring>
using namespace std;
int main(void){
	string s;
	int n;
	while(cin>>s>>n){
		while(n--){
			for(int i=0;i<s.size();i++){
				if(s[i]>s[i+1]||i==s.size()-1){
					s.erase(i,1);
					break;
				}
			}
		}
		int i;
		for(i=0;i<s.size();i++){
			if(s[i]!='0') break;
		}
		if(i<s.size())
		cout<<s.substr(i,s.size())<<endl; 
		else cout<<0<<endl;
	}
	
}