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#include <iostream>
using namespce std;
class sample{
    public:
    static int a;
    static void getdata()
    {
        cout<<a<<endl;
    }
};
int sample :: a=10;
int main()
{
    sample s;
    cout<<sample::getdata()<<endl;
    sample::a=100;
    cout<<sample::getdata<<endl;
}