import java.io.*;

public class IntMatrix {
	private int [][] matrix;
	
	public int [][] getMatrix() { return matrix; }
	public void setEqualTo( IntMatrix input) { this.matrix = input.getMatrix(); ; }
	
	public String toString() {
		System.out.println("This matrix = ...");
		String temp = "";
		for(int i = 0; i<this.matrix.length; i++) {
			//System.out.println("In for loop with i = " +i);
			//System.out.println("and temp = " +temp);
			for(int j = 0; j<this.matrix[i].length; j++)
				temp += prettify(this.matrix[i][j]) + "  ";
			temp += "\n";
		}
		//temp = "anyone there?";
		return temp;
	}
	
	private String prettify (int x){
		String adjust = "";
		if (x < 10 && x >= 0) adjust = " ";
		return adjust + Integer.toString(x);
	}
	
	public static int[][] readMatrix(BufferedReader br) throws Exception {
		// this reads the lines after <begin matrix> and up to and including <end matrix>, throwing
		// the numerical input into an int array to be returned, and ignores the line <end matrix>
		// so that any subsequent reads will be from the line following <end matrix>
		String [] bigJunk = new String[10000];
		int numLines = 0;
		for ( String str = br.readLine() ; str!=null && !str.equals("<end matrix>") ; 
										   str = br.readLine(), numLines++ ) {
			bigJunk[numLines] = str;
		}
		int [][] tempArray = new int[numLines][];
		String [] arrayStr;
		for(int i = 0; i<tempArray.length; i++) {
			arrayStr = bigJunk[i].split(" ");
			tempArray[i] = new int[arrayStr.length];
			for (int j = 0; j<tempArray[i].length; j++)
				tempArray[i][j] = Integer.parseInt(arrayStr[j]);
		}
		return tempArray;
	}
	
	public IntMatrix(int [][] array) {
		this.matrix = array;
	}
}