#include <bits/stdc++.h>
#define REP(i,n) for (int i = 0; i < (n); i++)
#define RREP(i, s, n) for (int i = s; i < (n); i++)
#define ALL(a) a.begin(), a.end()
#define RALL(a) a.rbegin(), a.rend()
#define maxs(x,y) x = max(x, y)
#define mins(x,y) x = min(x, y)
using namespace std;
using ll = long long;
typedef pair<int, int> pint;
typedef pair<ll, ll> pll;
const ll MOD = 1000000007;
const ll INF = MOD * MOD;
const int inf = (1<<29);

int main() {

    int a;
    cin >> a;
    string S;
    cin >> S;
    
    cout << (a >= 3200 ? s : "red") << endl;



    //cout << ans << endl;
    return 0;
}