#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
//#define int long long
using ll = long long;
using i64 = long long;
const int mod = 1e9 + 7;
// #define DEBUG

// 线段树合并信息


void solve() {
    int x, y;
    std::cin >> x >> y;
    if(y == 2){
        std::cout<<(3 - x) * 2;
    }
    else{
        if(x == 2)std::cout<<2;
        else if(x == 1)std::cout<<3;
        else std::cout<<4;
    }

}

signed main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    std::cout<<std::fixed<<std::setprecision(10);
    int t = 1;
    // int res = 0;
    // for(int i = 1;i <= 1145;i++) res |= i;
    // std::cerr<<res<<'\n';
    //std::cin>>t;
    while (t--) {
        solve();
    }
    return 0;
}