#include #define ALL(x) (x).begin(), (x).end() #define RALL(x) (x).rbegin(), (x).rend() #define FSP(x) fixed << setprecision(x) using namespace std; using ll = long long; constexpr ll INF = LLONG_MAX; //constexpr ll P = 1e9 + 7; //constexpr ll P = 998244353; constexpr long double PI = acosl(-1); void Yes() {cout << "Yes\n";} void No() {cout << "No\n";} void YES() {cout << "YES\n";} void NO() {cout << "NO\n";} int main() { ios::sync_with_stdio(false); cin.tie(nullptr); ll a, b; cin >> a >> b; cout << min(a, b) * 2 << endl; }