#include <stdio.h>
#include <stdlib.h>

int main(void) {
  int row, col;
  scanf("%d%d", &row, &col);
  // Initialize the 2d array
  int **arr = malloc(sizeof(int *) * row);
  for (int i = 0; i < row; i++) {
    arr[i] = malloc(sizeof(int) * col);
  }

  for (int i = 0; i < row; i++) {
    for (int j = 0; j < col; j++) {
      scanf("%d", &arr[i][j]);
    }
  }

  for (int i = 0; i < row; i++) {
    for (int j = 0; j < col - 1; j++) {
      printf("%d ", arr[i][j] * -10);
    }
    printf("%d\n", arr[i][col - 1] * -10);
  }

  // Free the 2d array
  for (int i = 0; i < row; i++) {
    free(arr[i]);
  }
  free(arr);
  return 0;
}