public static void main(String[] args) {
/* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
Scanner scan = new Scanner(System.in);
BigInteger bigInteger1 = scan.nextBigInteger();
BigInteger bigInteger2 = scan.nextBigInteger();
System.out.println(bigInteger1.add(bigInteger2));
System.out.println(bigInteger1.multiply(bigInteger2));
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int row = in.nextInt();
int col = in.nextInt();
BigInteger r = in.nextBigInteger();
// System.out.println(row);
// System.out.println(col);
// System.out.println(r);
int m[][] = new int[row][col];
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++) {
m[i][j] = in.nextInt();
}
}
// for (int i = 0; i < row; i++) {
// for (int j = 0; j < col; j++) {
// System.out.print(m[i][j]);
// }
// System.out.println();
// }
// System.out.println(Math.ceil(Math.sqrt(col)));
for (int n = 0; n < Math.ceil(Math.sqrt(col)); n++) {
int max_row = row - n;
int max_col = col - n;
// System.out.println("New array size: " + size);
List<Integer> a = new ArrayList<Integer>();
for (int i = n; i < max_row - 1; i++) {
a.add(m[i][n]);
}
// for (int i : a) {
// System.out.print(i);
// }
// System.out.println();
for (int i = n; i < max_col - 1; i++) {
a.add(m[max_row - 1][i]);
}
// for (int i : a) {
// System.out.print(i);
// }
// System.out.println();
for (int i = max_row - 1; i > n; i--) {
a.add(m[i][max_col - 1]);
}
// for (int i : a) {
// System.out.print(i);
// }
// System.out.println();
for (int i = max_col - 1; i > n; i--) {
a.add(m[n][i]);
}
// for (int i : a) {
// System.out.print(i);
// }
// System.out.println();
if (n == max_row - 1) {
for (int i = n; i < max_col - n; i++) {
a.add(m[n][i]);
}
}
for (int i : a) {
System.out.print(i);
}
System.out.println();
}
}