You are unfortunately mis understanding the duplicate content penalty.

Coding and Teaching Functional Web Development, Entrepreneurship, and Sustainability. Check out my blog at http://blog.ivanstorck.com

Apr 23, 2016

to avoid the duplicate document penalty from Google).

We did import all of our stories from Blogger here.

Quincy Larson

You are unfortunately mis understanding the duplicate content penalty. It doesn’t apply to reposts. http://searchengineland.com/googles-matt-cutts-duplicate-content-wont-hurt-you-unless-it-is-spammy-167459

You can even link the headline from medium to your blog post.