01. Number Pyramid

n = int(input())

currentNum = 1
is_bigger_n = False
for row in range(1, n + 1):
    for col in range(1, row + 1):
        if currentNum > n:
            is_bigger_n = True
            break
        print(currentNum, end=" ")
        currentNum += 1
    if is_bigger_n:
        break
    print()