#include<bits/stdc++.h>
using namespace std;
int main(){
	int n=100,b,c=1,d;
	while(c<n){
		b=c;
		while(b>0){
			d=b%10;
			b=b/10;
			if(d==2){
				cout<<c<<endl;
				break;
			}
		}
		c++;
	}
}
	    

	    
	
 

/**************************************************************
	Problem: 1700
	User: lvrenxiang
	Language: C++
	Result: Wrong Answer
****************************************************************/