#include <bits/stdc++.h>
using namespace std;
struct Foo
{
static int x;
public:
static void SetValue();
static void ShowValue();
};
int Foo::x=0;
void Foo::SetValue(){
x=10;
}
void Foo::ShowValue(){
cout<<x<<endl;
}
int main()
{
Foo::SetValue();
Foo::ShowValue();
}
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