include
using namespace std;
int main()
{
int a,c;
cin>>a;
if(a>=10)c=a%10;
else c=a;
cout<<c;
return 0;
}
using namespace std;
int main()
{
int a,c;
cin>>a;
if(a>=10)c=a%10;
else c=a;
cout<<c;
return 0;
}