View Code of Problem 609

                #include <stdio.h>
                #include <string.h>
                int main(){
                  char s[1000];
                  int n;
                  while(scanf("%s",s)!=EOF){
                    int len =strlen(s);
                    scanf("%d",&n);
                    int i=0;
                    while(n){
                      if(s[i]>s[i+1]){ 
                        s[i]='-1';
                        n--;
                        i=0;
                      }
                      i++;  
                    }
                    for(i=len-1;i>=0;i--){
                      if(s[i]!='-1'){
                        if(n>0){
                          s[i]='-1';
                          n--;
                        }else  break;
                      }
                    }
                    i=0;
                    while(s[i]=='0'||s[i]=='-1'){
                    i++;
                    }
                    if(i<len){
                      while(i<len){
                        if(s[i]!='-1'){
                           printf("%c",s[i]); 
                        }
                        i++;
                      }
                    }else  printf("0");
                    
                    printf("\n");
                  }
                }