public final class Kt903Kt {
    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
    public final static method plus(p0: int, @org.jetbrains.annotations.Nullable p1: java.lang.Integer): int
}


public class PerfectNumberFinder {
    public method <init>(): void
    public method isPerfect(p0: int): boolean
}
