#include <iostream>
using namespace std;
class Matrix2x2
{
public:
Matrix2x2() : n({{3,1},{4,7}}) {}
void setVal(int row, int col, double newVal);
double n[2][2];
};
int main() {
Matrix2x2 m;
cout << m.n[0][0] << endl;
cout << m.n[0][1] << endl;
cout << m.n[1][0] << endl;
cout << m.n[1][1] << endl;
return 0;
}
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