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contains n numbers a1, A2, ..., an (1≤ai≤105)-the elements of the array to guess. Source Technocup 2017-elimination Round 1 (unofficially Open for Everyone, rated for Div. 2) My Solution Test instructions: Interaction problem + solution N-ary equations Interaction problem + solving n-ary equations First Ask ? 1 2 ? 2 3 ? 1 3 Then x1 + x2 = = x12 1) x2 + x3 = = x23 2) x3 + X1 = = x13 3) 1)-2) + 3) 2*x1 can be obtained, thus x1 = (x12-x23 + x13)/2

Click to open link #include #include #include using namespace std; typedef long long LL; const int maxn=1e5+5; int A[MAXN],T[MAXN]; int main () { int n,k; scanf ("%d%d", &n,&k); LL sum=0; for (int i=0;i=0&&!t[i-k]) s-=a[i-k];

Yesterday, in order to give a demonstration to a customer, we made a webpart for scoring documents in the SharePoint document library. After the installation, drag the webpart to the document library interface and set its attributes: After the

With the enthusiastic participation of the small partners, the 2014 most praised the top ten tool selection results released, Duang~duang~duang #A3v] ' 7B Cloud server environment deployment, security monitoring, acceleration, performance testing,

D. degree Set time limit per test 2 seconds memory limit per test megabytes input standard input output standard OUTPU T You are given a sequence of n positive integers d1, d2, ..., dn (D1 Vertices should be numbered 1 through (DN + 1). Degree

Test instructions: The player has an initial score, then a K-jury rating, which will be added to the player's score in turn, but the player remembers at some point in the process N (n Idea: Thinking problem +stl. First you can parse a K-score

Very annoying a topic, only in a servant to add blood, unfortunately, the game time one hours, did not want to understand, the code will always have a number of mistakes in the wrong. Very annoying #include using namespace std; struct Node {Long

changes, such as the motor reversal, it is expected to withstand short-term peak current The current peak can reach twice the hold current. If there is no protection device, the control circuit will be damaged. Use diodes to prevent reverse current from damaging your circuit Check the rated power of your circuit and use a heat sink if needed Power (that is, voltage multiplied by current) Motor Running is often close to the stop current, or the revers

then provided to the motor, so that the motor's rotation speed can be freely controlled.Therefore, the inverter for frequency control is the preferred equipment for motor speed control equipment.N = 60f/PN: synchronization speedF: Power Supply frequencyP: pole logarithm of the Motor　　 Conclusion: changing the frequency and voltage is the optimal motor control method. If only the frequency is changed but the voltage is not changed, the motor may be burned out due to overvoltage (over-excitation)

in the country, but the price is very affordable, because the price is low, the profit is less, the company's staff treatment is generally low, this is the force for the company often have employees resign the main factor, From which I also realized what kind of power better, here to talk about personal experience: a good power supply must have PFC,PFC is a standard computer power, you can certainly have PFC power is very heavy, take in the hands are relatively heavy. Second: Look at power comp

current (AC) pass through zero values from negative values to positive values. 18. Power Grid: a power grid is a part of the power system. It is a unified network composed of various substations (sites) and transmission and distribution lines of different voltage levels. 19. Power System: The power system is part of the power system. It consists of generators and power distribution devices in power plants, boost-up and step-down substations, transmission and distribution lines, and electrical e

? In fact, although the manufacturer has the freedom to draw their own nameplate, no one dares to cheat. Because the power supply is sold to consumers, if the consumer because you believe that your "fake" nameplate and the recruit, then touched the most the most the bottom line of business-integrity. (Of course, for the plot to make quick money and disregard the credibility of the cottage manufacturers is another matter) No honest manufacturer, who dares to buy your product? Who da

In the new installation or to upgrade the hardware for the old computer, we often have to understand the computer power of W. General new installed according to the CPU, video card, memory, hard disk, motherboard power consumption, to calculate the appropriate size power of the power supply, while the old computer upgrade hardware, is mainly to see the upgrade of new hardware to increase the power consumption, on whether the power can also carry the move, if the power consumption is small, then

above the resistor.2. allowable error: the percentage deviation between the nominal resistance value and the actual resistance value and the nominal resistance value, which indicates the accuracy of the resistor.The correspondence between allowable errors and accuracy levels is as follows: ± 0. 5%-0.05, ± 1%-0.1 (or 00), ± 2%-0.2 (or 0), ± 5%-I, ± 10%-II, and ± 20%-III3. Rated Power: the normal atmospheric pressure is 90-106.6kpa and the ambient temp

Generally look at the power supply power We all say is rated power, so everyone in the purchase of power must pay attention to look at the rated power, not the maximum power. Many well-known fake brand power supply, are like in the Power label won a very high power value, but this is only the most high-power, not rated power, to know that the maximum power is the

The purpose of testing the UPS power supply is to determine whether the practical technical indicators of UPS can meet the requirements. UPS testing generally includes both steady-state testing and dynamic testing. The steady-state test is performed under no-load, 50% rated load, and 100% rated load conditions, test the phase voltage, line voltage, no-load loss, power factor, efficiency, output voltage wave

Original http://blog.sina.com.cn/s/blog_605538500101bd3p.html 0 Power resistor value RT (Ω) RT refers to the resistance value measured by measuring power that causes the change in the resistance value to be negligible in relation to the total measurement error when the specified temperature T is used. Olympian Sincerity The relationship between resistance value and temperature variation is: RT = RN EXPB (1/t–1/tn) RT: NTC thermistor resistance at temperature T (K).RN: NTC thermistor resistance

electrical medium, it can generate capacitors with larger capacity than NPO medium;Y5V (2f4) (z5u): it has a low dielectric constant and is often used in the production of large capacity capacitor products with a higher nominal capacity, but its capacity stability is less than X7R, capacity and loss are sensitive to temperature, voltage, and other test conditions. Name: aluminum electrolysis capacitor _ Anzmm) Symbol: Bnnjkc Capacity: 0. 47 -- zhangu@ Q ^} BM

At present, the power adapter according to the different supporting electronic and electrical equipment, respectively use the national standard "GB4943-2001: information technology equipment safety" and "GB8898-2001: security requirements for audio, video, and similar electronic equipment shall be used as the quality assessment standard. For example, power adapters for laptop computers, cellular phones, and other information equipment shall comply with the requirements of the national standard g

current in the corresponding winding, the electric motor's synthetic magnetic potential only rotates part of the step angle. When subdivided driving, the winding current is not a square wave but a step wave, and the rated current is a step type input or removal. For example, if the current is divided into n steps, it takes n times for the rotor to turn a step angle, that is, n subdivision, as shown in Figure 5. The general subdivision method only ch