Codeforces 899D - Shovel Sale 【思维】
Codeforces 899D - Shovel Sale 【思维】There are n shovels in Polycarp's shop. The i-th shovel costs i burles, thatis, the first shovel costs 1 burle, thesecond shovel costs 2 burles, the thirdshovel costs 3 burles, and so on.Polycarps wants to sell shove
