#include <iostream>
using namespace std;
#define ll long long
 
int countDigits(int n) {
	int count=0;
	while(n!=0) {
		n=n/10;
		count++;
	}
	return count;
}
int sum(int n) {
	int sum1=0;
	while(n!=0) {
		sum1 += n%10;
		n=n/10;
	}
	return sum1;
}
int main() {
	// your code goes here
	int n;
	cin >> n;
	int x=countDigits(n);
	cout << x << endl;
	int y=18*x;
	int c=0;
	for(ll i=n-y; i<=n; i++) {
		if(i+sum(i)+sum(sum(i))==n) {
			c++;
			cout << i << endl;
		}
	}
	cout << c << endl;
	return 0;
}

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OTkzOQ==

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