【Codeforces 1119H】Triple
【AtCoder Grand Contest 020 D】Min Max Repetition
【Codeforces 582E】Boolean Function
【Codeforces 639E】Bear and Paradox
【AtCoder Grand Contest 020 E】Encoding Subsets
【Codeforces 643F】Bears and Juice
【Codeforces 575I】Robots protection
【Codeforces 575A】Fibonotci
【Codeforces 587F】Duff is Mad
【Codeforces 553E】Kyoya and Train