Hi, From the first that i started CP i always liked problems that could be solved with some random in it, so i searched a lot but didn't find a random problemset.
now i'm making one :D
https://vjudge.net/contest/323610
password : abcd
UPD1: so after adding many problems the last problemset got filled so here more problems. :D
https://vjudge.net/contest/323731
any suggestion please comment :))