#define _USE_MATH_DEFINES #include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> #include <string> #include<math.h> #include<iomanip> #include<stdio.h> #include <stdlib.h> #include<stdio.h> #include <queue> #include<map> #include <sstream> #include<set> #include<stack> #include<time.h> #include <sys/types.h> #include <tuple> typedef long long int ll; //#include<bits/stdc++.h> using namespace std; int main() { int Q; Q = 1; //cin >> Q; while (Q--) { ll a, b; cin >> a >> b; ll x = 0; for (int i = 0; i <= 8; i++) { if (a & (1 << i))x |= (1 << i); if (b & (1 << i))x |= (1 << i); } ll ans = 1; for (int i = 1; i <= x; i++) { ans *= i; } cout << ans << endl; } return 0; }