[Codeforces] Round #730 (Div. 2) D1. RPD and Rap Sheet (Easy Version)Read more
[AtCoder] D - 射撃王Read more
[AtCoder] C - 収集王Read more
[AtCoder] C - 双子と○×ゲームRead more
[AtCoder] C - ウサギ跳びRead more
[AtCoder] C - おやつRead more
[Codeforces] Educational Round 111 (Rated for Div. 2) C. Manhattan SubarraysRead more
[Codeforces] Round #734 (Div. 3) D1. Domino (easy version)Read more
[Codeforces] Round #735 (Div. 2) B. CobbRead more
[Codeforces] Round #737 (Div. 2) C. Moamen and XORRead more