Fast PowerAs the name implies, it is a fast calculation of the number of times the power. Its time complexity is O (log?) n), the efficiency is greatly improved compared with the simple O (n).Principle of fast power realizationThe principle of fast power comparison understood, that is, if we ask for 3^11 , in fact, the more common way is
For 1:11a*=3;
development and management, as well as an active catalyst and practitioner of Chinese software engineering thinking.Wang Yong, the national Senior programmer, System architect, System architect, information System Project Manager, PMP, System Integration Senior project manager, Electronic industry publishing house technical consultant, the national many university professors, the national Soft test Guidance designated tutorial series of Vice-editor,
The Phoronix website recently conducted a comparative test on Windows7 and Ubuntu11.04 systems. However, it does not look at who runs fast, but who consumes more power. The system used for the test is Windows 7sp164 Professional Edition and Ubuntu11.0464. The test hardware platform has four sets-Lenovo ThinkPadT61 notebook: Core2DuoT9300Penryn dual-core processor, PM965 + ICH8
The Phoronix website recently conducted a comparative test on Windows 7 and
12: Calculate the N power of 2, and 12 calculate the N power12: Calculate the N power of 2
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Submit
Statistics
Question
Total time limit:
1000 ms
Memory limit:
65536kB
Description
Given a positive integer N (N
Input
Enter a positive integer N.
Output
Returns the N power of 2.
S
POJ 3233 Matrix Power Series Matrix Rapid Power + binary summation, poj3233
Matrix fast power, please refer to template http://www.cnblogs.com/pach/p/5978475.html
If sum = A + A2 + a3... + Ak is directly accumulated, it will definitely time out,
Sum = A + A2 +... + Ak/2 + A (k/2) * (A + A2 +... + Ak/2) When k is an even number;
Sum = A + A2 +... + A (k-1)/2 + A (
Many users installed in this site to share the Windows 10 operating system after the response boot without power-on password can automatically enter the system, feel so insecure, how to win10 system to add the power-on password? The following small series to bring you win10 set up the password method, take a look at it.
Steps:
1, press the "win+i" shortcut keys, open the Windows Settings interface, in the
1. The Windows 8.1 System has a Metro that we went into and found the "search" icon in metro to click on it, as shown in the following figure.
2. Then we directly search "Netplwiz" without parentheses, just inside the pinyin.
3. After the search there will be an icon to appear, we now just click on the "Netplwiz" application.
4. Now in the open interface, we click on "user account" and then "to use this computer, users must enter a username and password (E)" Cancel the
About the fast power this algorithm, already did not want to say, very early also will this algorithm, but originally always rely on the template foggy, recently re-study, found that overlooked an important problem, that is, if the number of modulus is greater than the int type, even if for __int64 when should do, so you have to use the multiplication of fast Power + Po
What does the power of the primitive mean:
Ancient cloud: The World Xuan Huang, the universe is immemorial. Legend has it that when the world was first opened, there was once a great flood that almost destroyed the whole Earth. Therefore, the power of the primitive is such as to destroy the world when the Earth is first opened.
The source of the power of the pr
CC2541 CC2540 is very important to achieve ultra-low power consumption:Let's summarize the implementation method:1, a timer runs in thePM2Current in300uAaround. There's no timer to run.PM3, the current will be less than10uA. This timer is defined asOsalthe timer,For example: Started the Osal_start_timerex (Keyfobapp_taskid, Kfd_toggle_buzzer_evt, 2000); But there's no time: it needs to be explainedKeyfoblow-power
Fast Power, Fast Power modulo
As the name implies, a quick power is to quickly calculate the power of a certain number. The time complexity is O (log complexity N), which greatly improves the efficiency compared with the simple O (N.
Principle:
The following is an introduction to B
Question
Given n numbers and Q queries, the super power of the [L, R] interval is output each time, modulo m is obtained.Ideas
The super power problem is solved by Euler's power reduction.
Euler's power reduction formula: $ A ^ B \ % m = a ^ {B \ % \ varphi (m) + \ varphi (m)} \ % m, (B> \ varphi (M) $
This article use
My motherboard is a 24PIN power interface, the power is 20PIN interface, compared, the more out of the interface is (+12V, +5v) and (+3.3v, GND) Two groups, now the motherboard only one +3.3v output used in the SATA power sockets, Want to use a large 4-pin socket to transfer into the 4-pin motherboard power connector,
station to reach the remote area of the power is too low, or even ignored, lost the meaning of the diversity of reception, but also caused a waste of tch.
(2) Set too large:
Poor voice quality, and even resulting in the drop of words, reducing the base station coverage;
The switching delay is caused;
The transmitting power of the mobile station near the base station boundary is too high, causing a lot
Introduction to the problem
My family has 2 ipad:1 is iPad1 generation, iOS5 system, 1 is the ipad air,ios7 system. The last time the ipad Air's iOS7 system opened the App Store, it sometimes went well, sometimes it was very serious and sometimes even hung out. It is now found that the ipad Air power consumption is much larger than iPad1 generation. I usually open the same game in two ipad, only need to click every 5 minutes, no other operation, the
M Fibonacci Sequence
Time Limit: 1000MS
Memory Limit: 32768KB
64bit IO Format: %i64d %i64u
Submit StatusDescriptionM Fibonacci Sequence F[n] is an integer sequence, which is defined as follows:F[0] = aF[1] = bF[n] = f[n-1] * F[n-2] (n > 1)Now give a, B, N, can you find the value of F[n]?InputInput contains multiple sets of test data;One row per group of data, containing 3 integers a, b, n (0 OutputFor each set of test data output an integer f[n],
First of all, the purpose of the fast power is to do a quick exponentiation, assuming we ask a^b, according to the naïve algorithm is to connect A to B, so that the time complexity is O (b) is also the O (n) level, fast power to do O (Logn), a lot faster. It has the following principles:Suppose we ask for a^b, then in fact B is can be split into binary, the second number I bit the right to 2^ (i-1), such as
Failure phenomenon:
The Ideacentre B5 series computer presses the host power source not to add electricity.
Solution:
1. Check whether the power supply is normal
First check whether the rest of the household electrical use is normal, the same socket on whether other appliances can work properly. You can plug the computer into other outlets. Test if there is a problem with the socket: use the lamp to tes
1. On Note4 Mobile Desktop we find "application" details as shown in the following figure.
2. Then find the "Settings" menu click Open.
3. Then you will see there is a "power saving" button for our war drums it.
4. Into the provincial power interface, we find "power-saving mode" (there is a close below, the default is closed we want t
1. This mobile phone with the power-saving mode, we click on the "Application."
2. Click the "Set" option to open the entry.
3. Here you will see a "Save power" option, we click to open the power to enter.
4. Click "Save power Mode", the following figure has a close, the representative is clo
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