#include <iostream>
using namespace std;
int main()
{
	short a,b,c;
	cin >> a >> b >> c;
	for (int i = 10;i < 100000;i++)
	{
		if (i % 3 == a && i % 5 == b && i % 7 == c)
		{
			cout << i;
			return 0;
		}
	}
	cout << "no answer";
	return 0; 
}