Problem:
Score : 400 points

Problem Statement

You are given integers N and M.

Consider a sequence a of length N consisting of positive integers such that a_1 + a_2 + ... + a_N = M. Find the maximum possible value of the greatest common divisor of a_1, a_2, ..., a_N.

Constraints

All values in input are integers.

1 \leq N \leq 10^5

N \leq M \leq 10^9

Input

Input is given from Standard Input in the following format:

N M

Output

Print the maximum possible value of the greatest common divisor of a sequence a_1, a_2, ..., a_N that satisfies the condition.

Sample Input 1

3 14

Sample Output 1

2

Consider the sequence (a_1, a_2, a_3) = (2, 4, 8). Their greatest common divisor is 2, and this is the maximum value.

Sample Input 2

10 123

Sample Output 2

3

Sample Input 3

100000 1000000000

Sample Output 3

10000

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long n = sc.nextLong();
        int m = sc.nextInt();
        long ans = 1;
        if (m % 2 == 0) {
            if (m >= 2 * n) {
                ans = 2;
            }

        }

        /// 素因数分解
        int cnt = 1;
        while (true) {
            break;
        }
        int max = (int) Math.sqrt(m) + 10;
        for (int i = 1; i < m; i++) {
            if (m % i != 0)
                continue;
            if (m < i * n)
                break;
            if (i > max)
                break;
            ans = i;
        }
        System.out.println(ans);
        sc.close();
    }
}