求查错（写了半个中午，改了整个中午，最后wa掉了······）

#include <iostream>
#include <cstring>
#include <cstdio>
#include <algorithm>
using namespace std;
struct number{
	int num;
	int place;
}a[10010];
int main()
{
	string n ;bool bre = 0;
	int k;
	cin >> n >> k;
	int len = n.length();
	for (int i = 0;i <= len; i ++){
		a[i].num = n[i];
		a[i].place = i ;
	}
	while(k --){
		for(int i = 9;i >= 1;i --){
			for(int j = 0;j <= len;j ++){
				if ( a[j].num == i){
					a[j].num = a[j].place = -1;
					bre = 1;
					break;
				}
			}
			if (bre == 1){
				bre = 0;
				break;	
			}
		}
	}
	int hahaha;
	for (int i = 0;i <= len;i ++){
		if (a[i].num == -1) hahaha = 1;
		else cout << a[i].num;
	}
	return 0;
}