#include <bits/stdc++.h>

#define int long long
#define ll long long
#define endl "\n"
using namespace std;
const int maxn = 1e5;

signed main() {
    int x, y;
    cin >> x >> y;
    if (x == y)
        cout << x << endl;
    else {
        cout << 3 - x - y << endl;
    }
    return 0;
}
#include <bits/stdc++.h>
using namespace std;
using ll = long long int;

void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif


const ll mod = 1e9 + 7;
const ll N = 1e5 + 8;


int main()
{
    ios_base :: sync_with_stdio(false);
    cin.tie(NULL); 
    
    ll n, k;
    cin >> n >> k;
    ll res = 0;
    for(int i = 1; i <= n; i++) {
        for(int j = 1; j <= k; j++) {
            res += 100 * i + j;
        }
    }
    cout << res;
    return 0;
}