Competitions

# Вступ_Заоч-3

# Matrix

Two positive integers **n** and **m** are given. Print the matrix that consists of **n** lines and **m** columns, filled with positive integers from **1** to **n * m**, as shown in the sample.

#### Input

Two positive integers **n** and **m**.

#### Output

Print the required matrix.

Input example #1

2 3

Output example #1

1 2 3 4 5 6