# import sys; input = sys.stdin.buffer.readline
# sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")
import copy

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	W = int(input())
	D = int(input())
	for i in range(D - 1):
		W -= int(W // ((D - i) ** 2))
		# print(W)

	print(W)

if __name__ == '__main__':
	main()