Balanced Sub-Arrays
Codeforces Round 299 (Div. 2) D. Tavas and Malekas
Codeforces Round 301 (Div. 2) D. Bad Luck Island
Codeforces Round 305 (Div. 1) B. Mike and Feet
Looksery Cup 2015 D. Haar Features
Codeforces Round 306 (Div. 2) D. Regular Bridge
Range MOD Query
Travelling Alex
Shift String