# -*- coding: utf-8 -*-
"""
No.51 やる気の問題
https://yukicoder.me/problems/no/51

"""
import sys
from sys import stdin
input = stdin.readline


def solve(W, D):
    for i in range(D, 1, -1):
        work = W // i**2
        W -= work
    return W


def main(args):
    W = int(input())
    D = int(input())
    ans = solve(W, D)
    print(ans)


if __name__ == '__main__':
    main(sys.argv[1:])