ACM77的博客

Digital RootsTime Limit: 2 Seconds      Memory Limit: 65536 KB BackgroundThe digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a

Martian AdditionTime Limit: 2 Seconds      Memory Limit: 65536 KB   In the 22nd Century, scientists have discovered intelligent residents live on the Mars. Martians are very fond of mathemat

DeckTime Limit: 2 Seconds      Memory Limit: 65536 KB ScenarioA single playing card can be placed on a table, carefully, so that the short edges of the card are parallel to the table's edg

Integer InquiryTime Limit: 2 Seconds      Memory Limit: 65536 KB One of the first users of BIT's new supercomputer was Chip Diller. He extended his exploration of powers of 3 to go from 0 to

Carbon DatingTime Limit: 2 Seconds      Memory Limit: 65536 KB Until the second half of the 20th century, determining the actual age of an archaeological find had been more or less a matter

Perfect CubesTime Limit: 10 Seconds      Memory Limit: 32768 KB For hundreds of years Fermat's Last Theorem, which stated simply that for n > 2 there exist no integers a, b, c > 1 such that