Educational Codeforces Round 68 (Rated for Div. 2) ABCDE题题解
EducationalCodeforcesRound68(RatedforDiv.2)A.RemoveaProgression◇题目传送门◆题目大意给定一个数列由111到NNN排列,现第iii次操作擦掉第iii个数,如下:原始数列:1,2,3,4,5,6,7,…1,2,3,4,5,6,7,\ldots1,2,3,4,5,6,7,…;操作一次后:2,3,4,5,6,7,…2,3,4,5,6,7,\l