ah_yeah

Key Set Time Limit:1000MS     Memory Limit:131072KB     64bit IO Format:%I64d & %I64u Description soda has a set  with  integers . A set is called key set if the sum of integers in

Pseudoprime numbers Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu Description Fermat's theorem （费马理论）states that for any prime number p and for any intege

Raising Modulo Numbers Time Limit:1000MS     Memory Limit:30000KB     64bit IO Format:%lld & %llu Description People are different. Some secretly read magazines full of interesting

Rightmost Digit Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Description Given a positive integer N, you should output the most right digit of N^N.