#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define F first
#define S second
#define pii pair<int, int>
#define eb emplace_back
#define all(v) v.begin(), v.end()
#define rep(i, n) for (int i = 0; i < n; ++i)
#define rep3(i, l, n) for (int i = l; i < n; ++i)
#define chmax(a, b) a = (a >= b ? a : b)
#define chmin(a, b) a = (a <= b ? a : b)
#define out(a) cout << a << endl
#define outa(a, n) rep(_, n) cout << a[_] << " "; cout << endl
#define SZ(v) (int)v.size()
#define inf (int)(1e9+7)
#define abs(x) (x >= 0 ? x : -(x))
#define ceil(a, b) a / b + !!(a % b)

template<typename T> T gcd(T a, T b) { if (a < b) swap(a, b); if (b == 0) return a; return gcd(b, a % b); }

// 解説ac
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    ll a, b;
    cin >> a >> b;
    ll g = gcd(a, b);
    out(g * gcd(a / g + b / g, g));
}

/*
 a'+b'、a'b'は互いに素
 1. 片方が偶数
 a'+b' = 奇数
 a'b' = 偶数
 2. 両方奇数
 a'+b' = 偶数
 a'b' = 奇数
 */