@[hudongdong](/space/show?uid=177277) $(10+1)^2$
by AC_Dolphin @ 2019-04-05 17:51:55
?
by hudongdong @ 2019-04-05 17:53:47
11*2=22
by hudongdong @ 2019-04-05 17:54:24
第一轮:1*10==10,10+1=11
第二轮:11->10=110,110+11=121
by saipubw @ 2019-04-05 18:16:08