求助，#8 WA

#include<bits/stdc++.h>
using namespace std;
int n,a[51],vis[51],top;
string s;
int main(){
	cin>>s;
	if(s.length()<=9)n=s.length();
	else n=(s.length()+9)/2;
	for(int i=0;i<s.length();i++){
		a[top]=s[i]-'0';
		if(i+1<s.length()){
			int p=a[top]*10+s[i+1]-'0';
			if(!vis[p]&&p<=n)a[top]=p,i++;
		}
		vis[a[top]]=1;top++;
	}
	for(int i=0;i<top;i++){
		cout<<a[i]<<" ";
	}
	return 0;
}