# Q10

# Receive input from the user
n = int(input("Enter a natural number (n): "))

# Variable to store the current number
current_number = 1

# Outer loop to print according to the number of rows
for row in range(1, n + 1):
    # Inner loop to print the numbers for the current row
    for col in range(row):
        print(current_number, end=" ")
        current_number += 1  # Increment the number
    print()  # Move to the next line after finishing the current row