2020 CCPC-Wannafly Winter Camp Day5 Div.1&2——A Alternative Accounts【状压】
题目传送门题目描述Everybodyknowsthatjiry_2=Syloviaely.Thereare{n}ndifferentaccountsonthewebsite,andsomeofthemcompetedintherecent{k}kcontests.However,Mikesuspectsthattherearelotsofalternativeaccounts.Thereareax