25184번: 동가수열 구하기 ↗

import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta
# sys.setrecursionlimit(10**7)

BLANK = " "

# inp = input
inp = lambda : sys.stdin.readline().rstrip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def gcd(a, b): return gcd(b, a % b) if b > 0 else a
def lcm(a, b): return a * b // gcd(a, b)


def solve():
	n = ii()

	if n % 2 == 1:
		z = n // 2

		ans = []
		for i in range(z + 1, 1, -1):
			ans.append(i)
			ans.append(i + z)
		ans.append(1)
		
	else:
		z = n // 2

		ans = []
		for i in range(z, 0, -1):
			ans.append(i)
			ans.append(i + z)
		
	p(*ans)


if __name__ == "__main__":
  tc = 1

  for t in range(1, tc+1):
    ret = solve()