C++ :

#include<iostream>
using namespace std;
bool find(int x)	//判断是否满足条件
{
	while (x)
	{
		int t=x%10;
		if (t>=2) return false;
		x/=10;
	}
	return true;
}
int main()
{
	int n,m;
	cin>>n;
	for (m=1; m*n<=2000000000; m++)
		if (find(m*n)) break;
	if (m*n>2000000000) cout<<"No found\n";
	else cout<<m<<endl;
	return 0;
}