/**
 * Memory class
 */
class Memory {
	private int[][] id;
/**
 * Memory constructor
 */
public Memory(int size) {
	super();
	id = new int[size][2];

	// initialize to -1
	for (int i=0; i<size; i++) {
		id[i][0] = -1;
		id[i][1] = -1;
	}
}
/**
 * return the context of the memory at location
 */
public int[] getMemory(int location) {
	return id[location];
}
/**
 * write page number and page info in memory at location
 */
public void writeMemory(int location, int page, int pageInfo) {
	id[location][0] = page;
	id[location][1] = pageInfo;
}
}