#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,a,b;
	for(i=10;i<=99;i++){
		a=i%10;
		b=i/10%10;
		if((a+b)+a*b==i){
			cout<<i<<endl;
		}
	} 
}
/**************************************************************
	Problem: 1722
	User: linzihang
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2072 kb
****************************************************************/