#include <bits/stdc++.h>

using namespace std;
typedef long long int LL;
typedef long long int LLint;

//Faster Coding
#define ED return 0
#define GET(a) int a;cin >> a
#define SGET(a) string a;cin >> a
#define CGET(a) char a;cin >> a
#define PRINT(a) cout << a << endl
#define ANS(a,b) int a;cin >> a;cout << b << endl
#define SORT(vec) sort(vec.begin(),vec.end())
#define REV(vec) reverse(vec.begin(),vec.end())

//Difficult Syntax
#define DOUBLECHANGE(count) cout << setprecision(count)

//As Function
#define UP(a,b) ((a+(b-1))/b)
#define ipow(x,y) LL(pow(x,y))

//Debug
#define TEST cout << "OK" << endl

const long long INF = 999999999;
const long long mod = 1000000007;

int main(){
      cin.tie(0);
      ios::sync_with_stdio(false);
      GET(A);
      SGET(S);
      PRINT((A>=3200)?S:"red");
}
