http://lightoj.com/volume_showproblem.php?problem=1282 Leading and Trailing Time Limit:2000MS     Memory Limit:32768KB     64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1282 Description You are given two integers: n and k, your task is t…

[LightOJ1282]Leading and Trailing(数论) 题面 Vjudge 给定两个数n,k 求n^k的前三位和最后三位 题解 这题..真的就是搞笑的 第二问,直接输出快速幂\(mod \ 1000\)的值,要补前导零 第一问...就是搞笑的 依旧是快速幂 但是用double来算 每次中间值只要大于1000 直接除得小于1000就行了 不会就看代码把.. 这题就是搞笑的... #include<iostream> #include<cstdio> #includ…

Leading and Trailing https://vjudge.net/contest/288520#problem/E You are given two integers: n and k, your task is to find the most significant three digits, and least significant three digits of nk. Input Input starts with an integer T (≤ 1000), den…

Leading and Trailing You are given two integers: n and k, your task is to find the most significant three digits, and least significant three digits of nk. Input Input starts with an integer T (≤ 1000), denoting the number of test cases. Each case st…

Apart from the novice programmers, all others know that you can’t exactly represent numbers raised to some high power. For example, the C function pow(125456, 455) can be represented in double datatype format, but you won’t get all the digits of the…

/** 题目:E - Leading and Trailing 链接:https://vjudge.net/contest/154246#problem/E 题意:求n^k得前三位数字以及后三位数字,保证一定至少存在六位. 思路:后三位求法只要不断对1000取余就行了. 前三位求法: 对一个数x,他可以用科学计数法表示为10^r*a (r为次方,1<=a<10) 设:n^k = x = 10^r*a 两边取对数: k*log10(n) = log10(x) = r+log10(a); 令y =…

Leading and Trailing You are given two integers: n and k, your task is to find the most significant three digits, and least significant three digits of nk. Input Input starts with an integer T (≤ 1000), denoting the number of test cases. Each case st…

题目链接:https://vjudge.net/problem/LightOJ-1282 1282 - Leading and Trailing    PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB You are given two integers: n and k, your task is to find the most significant three digits, and le…

LightOJ - 1282 Leading and Trailing 题解 纵有疾风起 题目大意 题意:给你一个数n,让你求这个数的k次方的前三位和最后三位. \(2<=n<2^{31}\),\(1<=k<10^{7}\) 并且\(n^{k}\)至少有6位数 解题思路 这个题目需要解决两个问题 输出\(n^{k}\)的前三位 输出\(n^{k}\)的后三位 输出后三位 这个比较好解决,使用快速幂和模运算就能解决,这里不再详细介绍,看代码就行了. 输出前三位 这个比较麻烦,因为\(…

1282 - Leading and Trailing You are given two integers: n and k, your task is to find the most significant three digits, and least significant three digits of nk. Input Input starts with an integer T (≤ 1000), denoting the number of test cases. Each…