1 #include <iostream>
 2 #include <cstdio>
 3 #include <cstring>
 4 #include <cstdlib>
 5 #include <vector>
 6 #include <climits>
 7 #include <algorithm>
 8 #include <cmath>
 9 #define LL long long
10 using namespace std;
11 char str[1100];
12 int main(){
13     int m,len,i,top;
14     while(scanf("%s %d",str,&m) == 2){
15         len = strlen(str);
16         top = 0;
17         for(i = 1; i < len;){
18             if(m && top >= 0 && str[top] > str[i]){m--;top--;}
19             else if(top != -1 || str[i] != ‘0‘) str[++top] = str[i++];
20             else i++;
21         }
22         while(top >= 0 && m){top--;m--;}
23         if(top == -1) str[++top] = ‘0‘;
24         str[++top] = ‘\0‘;
25         printf("%s\n",str);
26     }
27     return 0;
28 }