pid=1061">主题链接 题意:求n^n的个位数的值. 思路:高速幂求值 代码: #include <iostream> #include <cstdio> #include <cstring> #include <cmath> #include <algorithm> using namespace std; typedef __int64 ll; //typedef long long ll; const int MOD…

Given a positive integer N, you should output the most right digit of N^N. Input The input contains several test cases. The first line of the input is a single integer T which is the number of test cases. T test cases follow.  Each test case contains…

HDU 1061 题目大意:给定数字n(1<=n<=1,000,000,000),求n^n%10的结果 解题思路:首先n可以很大,直接累积n^n再求模肯定是不可取的, 因为会超出数据范围,即使是long long也无法存储. 因此需要利用 (a*b)%c = (a%c)*(b%c)%c,一直乘下去,即 (a^n)%c = ((a%c)^n)%c; 即每次都对结果取模一次 此外,此题直接使用朴素的O(n)算法会超时,因此需要优化时间复杂度: 一是利用分治法的思想,先算出t = a^(n/2),若…

Problem Description Given a positive integer N, you should output the most right digit of N^N. Input The input contains several test cases. The first line of the input is a single integer T which is the number of test cases. T test cases follow.Each…

Rightmost Digit Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 39554    Accepted Submission(s): 14930 Problem Description Given a positive integer N, you should output the most right digit of N…

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 35848    Accepted Submission(s): 13581 Problem Description Given a positive integer N, you should output the most right digit of N^N.   Input The…

Problem Description Given a positive integer N, you should output the most right digit of N^N. Input The input contains several test cases. The first line of the input is a single integer T which is the number of test cases. T test cases follow. Each…

C - Rightmost Digit Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1061 Description Given a positive integer N, you should output the most right digit of N^N. Input The input contains several test case…

Description Given a positive integer N, you should output the most right digit of N^N.                 Input The input contains several test cases. The first line of the input is a single integer T which is the number of test cases. T test cases foll…

1060 - Leftmost Digit 1601 - Rightmost Digit 1060题意很简单,求n的n次方的值的最高位数,我们首先设一个数为a,则可以建立一个等式为n^n = a * 10^x;其中x也是未知的: 两边取log10有:lg(n^n) = lg(a * 10^x); 即:n * lg(n)  - x = lg(a); 现在就剩x一个变量了,我们知道x是值n^n的位数-1,a向下取整就是我们要求的数: 所以 按着上面的推导式翻译成代码就可以了(注意:数值的范围和之间的…