#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a;
	cin>>a;
	if(a<100&&a>1)
	{
		cout<<"yes";
	}
	else
	{
		cout<<"";
	}
	return 0;
}

#include<bits/stdc++.h> using namespace std; int main() { int a; cin>>a; if(a<100&&a>1) { cout<<"yes"; } else { cout<<""; } return 0; }

#include<bits/stdc++.h> using namespace std; int main() { int n; cin>>n; if(n<100&&n>1) { cout <<"yes"; } return 0; }

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