#include <iostream>
using namespace std;
 
struct Block {
	int number;
};
 
int main() {
 
	Block block;
 
	auto reference = █
	cout << reference << endl;
 
	return 0;
}
				I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKc3RydWN0IEJsb2NrIHsKCWludCBudW1iZXI7Cn07CgppbnQgbWFpbigpIHsKCQoJQmxvY2sgYmxvY2s7CgkKCWF1dG8gcmVmZXJlbmNlID0gJmJsb2NrOwoJY291dCA8PCByZWZlcmVuY2UgPDwgZW5kbDsKCQoJcmV0dXJuIDA7Cn0=