import std;

alias sread = () => readln.chomp();
alias lread = () => readln.chomp.to!long();
alias aryread(T = long) = () => readln.split.to!(T[]);

void main()
{
    auto a = lread();
    auto s = sread();
    if (a >= 3200)
        writeln(s);
    else if (a < 3200)
        writeln("red");

}
//https://rclone.org/

void scan(L...)(ref L A)
{
    auto l = readln.split;
    foreach (i, T; L)
    {
        A[i] = l[i].to!T;
    }
}
