01. Number Pyramid

n = int(input())

current_num = 1
is_bigger_n = False
for row in range(1, n + 1):
    for col in range(1, row + 1):
        if current_num > n:
            is_bigger_n = True
            break

        print(current_num, end=" ")
        current_num += 1

    if is_bigger_n:
        break

    print()