21102 - 数字识别

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,a[10],k=0;
	cin>>n;
	while(n!=0){
		a[++k]=n%10;
		n/=10;
	}
	cout<<k<<endl;
	for(int i=k;i>=1;i--) cout<<a[i]<<endl;
	return 0;
}