/******************************************************************************
Welcome to GDB Online.
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C#, OCaml, VB, Swift, Pascal, Fortran, Haskell, Objective-C, Assembly, HTML, CSS, JS, SQLite, Prolog.
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*******************************************************************************/
#include <iostream>
using namespace std;
int main() {
int a[10][20][30][40];
cout<<"a="<<a[5][5]-a[0][0]<<endl;
cout<<"b="<<&a[5][5]-&a[0][0]<<endl;
cout<<"c="<<a[5]-a[0]<<endl;
cout<<a[5][5]<<endl<<a[0][0]<<endl<<&a[5][5]<<endl<<&a[0][0];
}
