View Code of Problem 609

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