//Normal #define _GLIBCXX_DEBUG #define ll long long #include <bits/stdc++.h> using namespace std; using Graph = vector<vector<int>>; void print(auto a){ cout << a; } void prints(auto a){ cout << a << " "; } void prints(){ cout << " "; } void printl(auto a){ cout << a << endl; } void printl(){ cout << endl; } void fix(int n){ cout << fixed << setprecision(n); } int main(){ int N; cin >> N; for(int i = N-100; i <= N+100; i++){ if(i%2 == 0 and i != 2){ printl(i); return 0; } } }