Sclong0218的博客

                            How many integers can you find                          Time Limit: 12000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)                             ...

A digit sum Sb(n)S_b(n)Sb​(n) is a sum of the base-b digits of n. Such as S10(233)=2+3+3=8S_{10}(233) = 2 + 3 + 3 = 8S10​(233)=2+3+3=8,S2(8)=1+0+0=1S_{2}(8)=1 + 0 + 0 = 1S2​(8)=1+0+0=1, S2(7)=1+1+1=3S...