Plus and Square Root
ZS the Coder is playing a game. There is a number displayed on the screen and there are two buttons, ' + ' (plus) and '' (square root). Initially, the number 2 is displayed on the screen. There are n + 1 levels in the game and ZS the Coder start at the level 1.
When ZS the Coder is at level k, he can :
- Press the ' + ' button. This increases the number on the screen by exactly k. So, if the number on the screen was x, it becomes x + k.
- Press the '
' button. Let the number on the screen be x. After pressing this button, the number becomes
. After that, ZS the Coder levels up, so his current level becomes k + 1. This button can only be pressed when x is a perfect square, i.e. x = m2 for some positive integer m.
Additionally, after each move, if ZS the Coder is at level k, and the number on the screen is m, then m must be a multiple of k. Note that this condition is only checked after performing the press. For example, if ZS the Coder is at level 4 and current number is 100, he presses the '' button and the number turns into 10. Note that at this moment, 10 is not divisible by 4, but this press is still valid, because after it, ZS the Coder is at level 5, and 10 is divisible by 5.
ZS the Coder needs your help in beating the game — he wants to reach level n + 1. In other words, he needs to press the '' button n times. Help him determine the number of times he should press the ' + ' button before pressing the '
' button at each level.
Please note that ZS the Coder wants to find just any sequence of presses allowing him to reach level n + 1, but not necessarily a sequence minimizing the number of presses.
Input
The first and only line of the input contains a single integer n (1 ≤ n ≤ 100 000), denoting that ZS the Coder wants to reach level n + 1.
Output
Print n non-negative integers, one per line. i-th of them should be equal to the number of times that ZS the Coder needs to press the ' + ' button before pressing the '' button at level i.
Each number in the output should not exceed 1018. However, the number on the screen can be greater than 1018.
It is guaranteed that at least one solution exists. If there are multiple solutions, print any of them.
Example
3
14
16
46
2
999999999999999998
44500000000
4
2
17
46
97
Note
In the first sample case:
On the first level, ZS the Coder pressed the ' + ' button 14 times (and the number on screen is initially 2), so the number became 2 + 14·1 = 16. Then, ZS the Coder pressed the '' button, and the number became
.
After that, on the second level, ZS pressed the ' + ' button 16 times, so the number becomes 4 + 16·2 = 36. Then, ZS pressed the '' button, levelling up and changing the number into
.
After that, on the third level, ZS pressed the ' + ' button 46 times, so the number becomes 6 + 46·3 = 144. Then, ZS pressed the '' button, levelling up and changing the number into
.
Note that 12 is indeed divisible by 4, so ZS the Coder can reach level 4.
Also, note that pressing the ' + ' button 10 times on the third level before levelling up does not work, because the number becomes 6 + 10·3 = 36, and when the '' button is pressed, the number becomes
and ZS the Coder is at Level 4. However, 6 is not divisible by 4 now, so this is not a valid solution.
In the second sample case:
On the first level, ZS the Coder pressed the ' + ' button 999999999999999998 times (and the number on screen is initially 2), so the number became 2 + 999999999999999998·1 = 1018. Then, ZS the Coder pressed the '' button, and the number became
.
After that, on the second level, ZS pressed the ' + ' button 44500000000 times, so the number becomes 109 + 44500000000·2 = 9·1010. Then, ZS pressed the '' button, levelling up and changing the number into
.
Note that 300000 is a multiple of 3, so ZS the Coder can reach level 3.
有两个操作,没进行一次开平方操作,level k 提升1,输出当level提升到n+1,要进行几个+操作,每次加k,进行开平方的数t满足t%((k+1)^2)==0,而且t%k==0,所以每次的t就是
k*k*(k+1)*(k+1)恰好是平方数,开平方后是k*(k-1),上个level的就是k*(k-1),输出(k*k*(k+1)*(k+1)-k*(k-1))/k=k*(k+1)*(k+1)-k+1.
代码:
#include <iostream> using namespace std; int main()
{
int n;
cin>>n;
cout<<<<endl;
for(long long i = ;i <= n;i ++)
{
cout<<((i+)*i*(i+) - i+)<<endl;
}
}
Plus and Square Root的更多相关文章
- Codeforces 715A. Plus and Square Root[数学构造]
A. Plus and Square Root time limit per test 2 seconds memory limit per test 256 megabytes input stan ...
- Project Euler 80:Square root digital expansion 平方根数字展开
Square root digital expansion It is well known that if the square root of a natural number is not an ...
- Codeforces 612E - Square Root of Permutation
E. Square Root of Permutation A permutation of length n is an array containing each integer from 1 t ...
- Codeforces 715A & 716C Plus and Square Root【数学规律】 (Codeforces Round #372 (Div. 2))
C. Plus and Square Root time limit per test 2 seconds memory limit per test 256 megabytes input stan ...
- (Problem 57)Square root convergents
It is possible to show that the square root of two can be expressed as an infinite continued fractio ...
- Square Root
Square RootWhen the square root functional configuration is selected, a simplified CORDIC algorithm ...
- Codeforces Round #372 (Div. 1) A. Plus and Square Root 数学题
A. Plus and Square Root 题目连接: http://codeforces.com/contest/715/problem/A Description ZS the Coder i ...
- CodeChef - SQRGOOD:Simplify the Square Root (求第N个含平方因子数)
Tiny Wong the chef used to be a mathematics teacher in a senior high school. At that time, he always ...
- Project Euler 57: Square root convergents
五十七.平方根收敛(Square root convergents) 二的平方根可以表示为以下这个无穷连分数: \[ \sqrt 2 =1+ \frac 1 {2+ \frac 1 {2 +\frac ...
随机推荐
- 4.4 Routing -- Specifying A Route's Model
一.概述 应用程序中,templates被models支持.但是templates是如何知道它们应该显示哪个model呢? 例如,你有一个photos模板,它是如何知道它该呈现哪个model呢? 这就 ...
- 892. Surface Area of 3D Shapes
问题 NxN个格子中,用1x1x1的立方体堆叠,grid[i][j]表示坐标格上堆叠的立方体个数,求这个3D多边形的表面积. Input: [[1,2],[3,4]] Output: 34 思路 只要 ...
- c/c++获取系统时间函数
参考:http://blog.sina.com.cn/s/blog_6f2caee40100uu41.html Coordinated Universal Time(UTC): 协调世界时,又称为 ...
- vw 、vh、vmin 、vmax
转自:https://blog.csdn.net/romantic_love/article/details/80868909 vw.vh.vmin.vmax是一种视窗单位,也是相对单位. 它相对的不 ...
- linux内核分析第七周-Linux内核如何装载和启动一个可执行程序
一.可执行文件的创建 可执行文件的创建就是三步:预处理.编译和链接. cd Code vi hello.c #写入最简单的helloworld的c程序 gcc -E -o hello.cpp hell ...
- VC++使用HOOK API 屏蔽PrintScreen键截屏以及QQ和微信默认热键截屏
转载:http://blog.csdn.net/easysec/article/details/8833457 转载:http://www.vckbase.com/module/articleCont ...
- git如何在自动生成补丁时指定补丁名的起始编号
答:使用选项--start-number,用法如下: git format-patch 1f43be --start-number=2 这样就可以生成起始编号为2的补丁名,类似0002-me.patc ...
- POJ 1625 Censored!(AC自动机->指针版+DP+大数)题解
题目:给你n个字母,p个模式串,要你写一个长度为m的串,要求这个串不能包含模式串,问你这样的串最多能写几个 思路:dp+AC自动机应该能看出来,万万没想到这题还要加大数...orz 状态转移方程dp[ ...
- POJ3278_Catch that cow
一个简单的bfs题. 用结构体的目的在于保存bfs到达此处时走的步数. 不多言,上AC代码: //18:18 #include<iostream> #include<cstdio&g ...
- Codeforces Round #419 (Div. 2) B. Karen and Coffee(经典前缀和)
http://codeforces.com/contest/816/problem/B To stay woke and attentive during classes, Karen needs s ...