#include #define rep(i,n) for(int i = 0; i < (int)(n); i++) #define rrep(ri,n) for(int ri = (int)(n-1); ri >= 0; ri--) #define rep2(i,x,n) for(int i = (int)(x); i < (int)(n); i++) #define rrep2(ri,x,n) for(int ri = (int)(n-1); ri >= (int)(x); ri--) #define repit(itr,x) for(auto itr = x.begin(); itr != x.end(); itr++) #define rrepit(ritr,x) for(auto ritr = x.rbegin(); ritr != x.rend(); ritr++) #define ALL(x) x.begin(), x.end() using ll = long long; using namespace std; #include using namespace atcoder; using mint = modint998244353; int main() { ll n; cin >> n; if(n % 2 == 1) n--; mint ans = 1; rep(i, n/2) { ans *= 6; } cout << ans.val() << endl; return 0; }