void main() {
    import std.stdio, std.bigint, std.range, std.algorithm;

    auto squares = 0.sequence!"n".map!(i => i.BigInt ^^ 2);
    auto cubes = 0.sequence!"n".map!(i => i.BigInt ^^ 3);

    squares
    .filter!(s => cubes.find!(c => c >= s).front != s)
    .drop(20)
    .take(10)
    .writeln;
}