import std.stdio,
       std.conv,
       std.string,
       std.range,
       std.math,
       std.algorithm;

void main()
{
    auto S = readln.strip;
    auto B = stdin.byLineCopy.array;

    auto name = ["oda", "yukiko"].cycle;
    name[B.map!(x => x.split("").count!(a => a != ".")).sum + (S == "oda" ? 0 : 1)].writeln;
}