#include 
using namespace std;
int main()
{
int a=0,b=0,c,d,e;
while(1)
{
a++;
d=0;
b=0;
cout << "Sample Input" << a << " :\n";
while(b<1 || b>99)
cin >> b;
for (e=0;e<=b;e++)
{
c=e/10;
if (c==3 || e-c*10==3)
d++;
}
cout << "Sample Output" << a << " :\n" << d << endl << endl;
}
}