#include<bits/stdc++.h> #include<atcoder/all> using namespace std; using namespace atcoder; using ll = long long; using db = long double; using ch = char; using bl = bool; using st = string; using pll = pair<ll,ll>; using psl = pair<st,ll>; using vst = vector<st>; using vch = vector<ch>; using vvch = vector<vch>; using vbl = vector<bl>; using vvbl = vector<vbl>; using vdb = vector<db>; using vpll = vector<pll>; using vvpll = vector<vpll>; using vpsl = vector<psl>; using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>; using vll = vector<ll>; using vvll = vector<vll>; using vvvll = vector<vvll>; using vvvvll = vector<vvvll>; using vvvvvll = vector<vvvvll>; #define all(A) A.begin(),A.end() #define rep(i, n) for (ll i = 0; i < (ll)(n); i++) #define rrep(i,a,b) for(ll i=(ll)(a);i<=(ll)(b);i++) #define drep(i,n) for(ll i=(ll)n-1; i>=0; i--) #define drrep(i,a,b) for(ll i=(ll)a; i>=(ll)b; i--) using mint = modint998244353; // using mint = modint1000000007; using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; const ll mod = 998244353; const ll INF = 3e18; template<class T> inline bool chmin(T &a, T b) { if (a>b) { a=b; return true; } return false; } template<class T> inline bool chmax(T &a, T b) { if (a<b) { a=b; return true; } return false; } ll gcd(ll a, ll b) { if (a==0)return b; if (b==0)return a; ll c=a; while(a%b!=0) { c=a%b; a=b; b=c; } return b; } ll lcm(ll a,ll b){ return a/gcd(a,b)*b; } ll Pow(ll a, ll n) { ll res=1; while(n>0) { if(n%2==1)res*=a; a*=a; n/=2; } return res; } ll Pow(ll a, ll n, ll p) { ll res=1; while(n>0) { a%=p; if(n%2==1)res*=a; a*=a; res%=p; n/=2; } return res; } void yn(bl ok) { cout << (ok?"Yes":"No") << endl; return; } st s,t; int main() { cin>>s>>t; if(s.back()=='1'&&t.back()=='1'){ cout << "Odd" << endl; } else { cout << "Even" << endl; } return 0; }