题目大意:有$T(1\leqslant T\leqslant 10)$组数据,每组数据给你$A,B,C(0<A,B,C\leqslant 10^7)$,求$\sum\limits_{i=1}^A\sum\limits_{j=1}^B\sum\limits_{k=1}^C\varphi((i,j^2,k^3))\bmod 2^{30}$ 题解:$$\def \dsum{\displaystyle\sum\limits}\begin{align*}&\dsum_{i=1}^A\dsum_{j=1…

目录 @description@ @solution@ @accepted code@ @details@ @description@ 给定 A, B, C,求: \[\sum_{i=1}^{A}\sum_{j=1}^{B}\sum_{k=1}^{C}\phi(gcd(i, j^2, k^3))\mod 2^{30}\] Input 第一行给定一个整数 T,描述数据组数. 接下来每组数据包含三个整数 A, B, C,含义如上. 1 ≤ T ≤ 10, 0 < A, B, C ≤ 10^7 Out…

In my stochastic processes class, Prof Mike Steele assigned a homework problem to calculate the ruin probabilities for playing a game where you with 1 dollar with probability p and lose 1 dollar with probability 1-p. The probability of winning is not…

Problem Description Calculate A * B.   Input Each line will contain two integers A and B. Process to end of file. Note: the length of each integer will not exceed 50000.   Output For each case, output A * B in one line.   题目大意:求A * B. 思路:快速傅里叶变换的模板题,…

A * B Problem Plus Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 16932    Accepted Submission(s): 3558 Problem Description Calculate A * B.   Input Each line will contain two integers A and B…

A * B Problem Plus Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 12665    Accepted Submission(s): 2248 Problem Description Calculate A * B.   Input Each line will contain two integers A and B.…

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 339636 Accepted Submission(s): 106389 Problem Description Calculate A + B. Input Each line will contain two integers A and B. Process to end of file…

Problem Description Calculate A * B.   Input Each line will contain two integers A and B. Process to end of file. Note: the length of each integer will not exceed 50000.   Output For each case, output A * B in one line. Sample Input 1 2 1000 2 Sample…

Problem Description Calculate A * B. Input Each line will contain two integers A and B. Process to end of file. Note: the length of each integer will not exceed 50000. Output For each case, output A * B in one line. Sample Input 1 2 1000 2 Sample Out…

Problem Description Calculate S(n). S(n)=1^3+2^3 +3^3 +--+n^3 . Input Each line will contain one integer N(1 < n < 1000000000). Process to end of file. Output For each case, output the last four dights of S(N) in one line. Sample Input 1 2 Sample Ou…