#include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define Would #define you const int INF = 999999999; const int MOD = 1e9 + 7; const double pi = 3.141592653589793238; int main() { int n; cin >> n; if (n % 2) { ++n; } cout << n << endl; }