View Code of Problem 609

#include<iostream>	
#include<string>
#include<cstring>

using namespace std;

int main() {
	string str;
	int s;
	while (cin >> str >> s) {
		/*if (str.size() == s) {
			cout << 0 << endl;
			continue;

		}*/
		while (s--) {
			for (int i = 0; i < str.size(); i++)
			{
				if (str[i] > str[i + 1] || i == str.size() - 1) {
					str.erase(i, 1);
					break;
				}
			}
		}
		
		 
			int i = 0;
			for (i = 0; i < str.size(); )
			{
				if (str[i] == '0') {

					i++;
				}
				else break;
			}
			if (i < str.size())
				cout << str.substr(i) << endl;
			else cout << 0 << endl;
	}
	return 0;
}