2016-2017 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) B. Minimum and Maximum
Codeforces Round 378 (Div. 2) C. Epidemic in Monstropolis
Codeforces Round 384 (Div. 2) D. Chloe and pleasant prizes
Find the smallest
First Variation on Caesar Cipher
Hamming Numbers
Spinning Rings - Fidget Spinner Edition
Smallest possible sum
Find the Tree
Find the Matrix