#include <iostream>
#include <vector>
#include <queue>
#include <cassert>
#include <algorithm>

using namespace std;
// using namespace atcoder;

typedef long long ll;
typedef long double ld;

const ll INF = 1LL << 60;
const ll MOD = 998244353;
// using mint = modint998244353;
const string NEW_LINE = "\n";

inline void output_YesNo(bool x) { cout << (x ? "Yes" : "No") << endl; }
template<typename T>
inline void chmax(T &lhs, const T &rhs) { lhs = max(lhs, rhs); }
template<typename T>
inline void chmin(T &lhs, const T &rhs) { lhs = min(lhs, rhs); }

// #include <iomanip>
//
// void init_output() { cout << fixed << setprecision(15); }

int main() {
    ll p, q;
    cin >> p >> q;

    ll pl = p - 1, ql = q - 1, pr = p, qr = q - 1;
    {
        ll x = __gcd(pl, ql), y = __gcd(pr, qr);
        pl /= x, ql /= x, pr /= y, qr /= y;
    }

    cout << pl + ql + pr + qr << endl;
    return 0;
}