摘要：设B0＝1，当k＞0时，定义这些Bi(i＝0, 1,…, k)被称为伯努利数。按定义，自然得出：B1＝－，B2＝，B3＝0，B4＝－，B5＝0，B6＝，B7＝0，B8＝－，…。伯努利数是瑞士数学家雅各布·伯努利引入的数，出自于他的著作《猜度术》(1713)。除了B1外，当k为奇数时，Bk＝0；当k为偶数时，B2, B6, B10,…是正分数；B4, B8, B12,…是负分数。雅各布·伯努利引入伯努利数的目的是解决所谓“等幂和”的问题：求Sk(n)＝1k＋2k＋…＋nk对于S1(n)＝1＋2＋3＋…＋n＝n(n＋1)S2(n)＝12＋22＋32＋…＋n2＝n(n＋1)(2n 阅读全文

摘要：The Grand DinnerTime Limit:5000MSMemory Limit:Unknown64bit IO Format:%lld & %llu[Submit] [Go Back] [Status]DescriptionProblem D The Grand DinnerInput... 阅读全文

摘要：Problem C Add Again Input:Standard InputOutput:Standard OutputSummation of sequence of integers is always a common problem in Computer Science. Rather than computing blindly, some intelligent techniques make the task simpler. Here you have to find the summation of a sequence of integers. The sequenc 阅读全文

摘要：Sum of Cubes Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 815 Accepted Submission(s): 182 Problem Description According to Goldbach’s conjecture... 阅读全文

摘要：Problem B.Last Digit Background Give you a integer number N (1 2: #include 3: using namespace std; 4: const int maxn=101; 5: int sum[maxn]; 6: int myFun(int n){ 7: int ans=1; ... 阅读全文