We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.
標(biāo)簽: represented integers group items
上傳時間: 2016-01-17
上傳用戶:jeffery
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa. For example, >> project.name = MyProject >> project.id = 1234 >> project.param.a = 3.1415 >> project.param.b = 42 becomes with str=xml_format(project, off ) "<project> <name>MyProject</name> <id>1234</id> <param> <a>3.1415</a> <b>42</b> </param> </project>" On the other hand, if an XML string XStr is given, this can be converted easily to a MATLAB data type or structure V with the command V=xml_parse(XStr).
標(biāo)簽: converts Toolbox complex logical
上傳時間: 2016-02-12
上傳用戶:a673761058
求標(biāo)準(zhǔn)偏差 > function c=myfunction(x) > [m,n]=size(x) > t=0 > for i=1:numel(x) > t=t+x(i)*x(i) > end > c=sqrt(t/(m*n-1)) function c=myfunction(x) [m,n]=size(x) t=0 for i=1:m for j=1:n t=t+x(i,j)*x(i,j) end end c=sqrt(t/(m*n-1
標(biāo)簽: gt myfunction function numel
上傳時間: 2014-01-15
上傳用戶:hongmo
求標(biāo)準(zhǔn)偏差 > function c=myfunction(x) > [m,n]=size(x) > t=0 > for i=1:numel(x) > t=t+x(i)*x(i) > end > c=sqrt(t/(m*n-1)) function c=myfunction(x) [m,n]=size(x) t=0 for i=1:m for j=1:n t=t+x(i,j)*x(i,j) end end c=sqrt(t/(m*n-1
標(biāo)簽: gt myfunction function numel
上傳時間: 2013-12-26
上傳用戶:dreamboy36
求標(biāo)準(zhǔn)偏差 > function c=myfunction(x) > [m,n]=size(x) > t=0 > for i=1:numel(x) > t=t+x(i)*x(i) > end > c=sqrt(t/(m*n-1)) function c=myfunction(x) [m,n]=size(x) t=0 for i=1:m for j=1:n t=t+x(i,j)*x(i,j) end end c=sqrt(t/(m*n-1
標(biāo)簽: gt myfunction function numel
上傳時間: 2016-06-28
上傳用戶:change0329
求標(biāo)準(zhǔn)偏差 > function c=myfunction(x) > [m,n]=size(x) > t=0 > for i=1:numel(x) > t=t+x(i)*x(i) > end > c=sqrt(t/(m*n-1)) function c=myfunction(x) [m,n]=size(x) t=0 for i=1:m for j=1:n t=t+x(i,j)*x(i,j) end end c=sqrt(t/(m*n-1
標(biāo)簽: gt myfunction function numel
上傳時間: 2014-09-03
上傳用戶:jjj0202
動態(tài)規(guī)劃的方程大家都知道,就是 f[i,j]=min{f[i-1,j-1],f[i-1,j],f[i,j-1],f[i,j+1]}+a[i,j] 但是很多人會懷疑這道題的后效性而放棄動規(guī)做法。 本來我還想做Dijkstra,后來變了沒二十行pascal就告訴我數(shù)組越界了……(dist:array[1..1000*1001 div 2]...) 無奈之余看了xj_kidb1的題解,剛開始還覺得有問題,后來豁然開朗…… 反復(fù)動規(guī)。上山容易下山難,我們可以從上往下走,最后輸出f[n][1]。 xj_kidb1的一個技巧很重要,每次令f[i][0]=f[i][i],f[i][i+1]=f[i][1](xj_kidb1的題解還寫錯了)
標(biāo)簽: 動態(tài)規(guī)劃 方程 家
上傳時間: 2014-07-16
上傳用戶:libinxny
Euler函數(shù): m = p1^r1 * p2^r2 * …… * pn^rn ai >= 1 , 1 <= i <= n Euler函數(shù): 定義:phi(m) 表示小于等于m并且與m互質(zhì)的正整數(shù)的個數(shù)。 phi(m) = p1^(r1-1)*(p1-1) * p2^(r2-1)*(p2-1) * …… * pn^(rn-1)*(pn-1) = m*(1 - 1/p1)*(1 - 1/p2)*……*(1 - 1/pn) = p1^(r1-1)*p2^(r2-1)* …… * pn^(rn-1)*phi(p1*p2*……*pn) 定理:若(a , m) = 1 則有 a^phi(m) = 1 (mod m) 即a^phi(m) - 1 整出m 在實際代碼中可以用類似素數(shù)篩法求出 for (i = 1 i < MAXN i++) phi[i] = i for (i = 2 i < MAXN i++) if (phi[i] == i) { for (j = i j < MAXN j += i) { phi[j] /= i phi[j] *= i - 1 } } 容斥原理:定義phi(p) 為比p小的與p互素的數(shù)的個數(shù) 設(shè)n的素因子有p1, p2, p3, … pk 包含p1, p2…的個數(shù)為n/p1, n/p2… 包含p1*p2, p2*p3…的個數(shù)為n/(p1*p2)… phi(n) = n - sigm_[i = 1](n/pi) + sigm_[i!=j](n/(pi*pj)) - …… +- n/(p1*p2……pk) = n*(1 - 1/p1)*(1 - 1/p2)*……*(1 - 1/pk)
標(biāo)簽: Euler lt phi 函數(shù)
上傳時間: 2014-01-10
上傳用戶:wkchong
//Euler 函數(shù)前n項和 /* phi(n) 為n的Euler原函數(shù) if( (n/p) % i == 0 ) phi(n)=phi(n/p)*i else phi(n)=phi(n/p)*(i-1) 對于約數(shù):divnum 如果i|pr[j] 那么 divnum[i*pr[j]]=divsum[i]/(e[i]+1)*(e[i]+2) //最小素因子次數(shù)加1 否則 divnum[i*pr[j]]=divnum[i]*divnum[pr[j]] //滿足積性函數(shù)條件 對于素因子的冪次 e[i] 如果i|pr[j] e[i*pr[j]]=e[i]+1 //最小素因子次數(shù)加1 否則 e[i*pr[j]]=1 //pr[j]為1次 對于本題: 1. 篩素數(shù)的時候首先會判斷i是否是素數(shù)。 根據(jù)定義,當(dāng) x 是素數(shù)時 phi[x] = x-1 因此這里我們可以直接寫上 phi[i] = i-1 2. 接著我們會看prime[j]是否是i的約數(shù) 如果是,那么根據(jù)上述推導(dǎo),我們有:phi[ i * prime[j] ] = phi[i] * prime[j] 否則 phi[ i * prime[j] ] = phi[i] * (prime[j]-1) (其實這里prime[j]-1就是phi[prime[j]],利用了歐拉函數(shù)的積性) 經(jīng)過以上改良,在篩完素數(shù)后,我們就計算出了phi[]的所有值。 我們求出phi[]的前綴和 */
標(biāo)簽: phi Euler else 函數(shù)
上傳時間: 2016-12-31
上傳用戶:gyq
遙控解碼通過電腦串口顯示 /* 晶振:11.0569MHz */ #include <REGX52.h> #define uchar unsigned char uchar data IRcode[4] //定義一個4字節(jié)的數(shù)組用來存儲代碼 uchar CodeTemp //編碼字節(jié)緩存變量 uchar i,j,k //延時用的循環(huán)變量 sbit IRsignal=P3^2 //HS0038接收頭OUT端直接連P3.2(INT0) /**************************延時0.9ms子程序**********************/ void Delay0_9ms(void) {uchar j,k for(j=18 j>0 j--) for(k=20 k>0 k--) } /***************************延時1ms子程序**********************/ void Delay1ms(void) {uchar i,j for(i=2 i>0 i--) for(j=230 j>0 j--) }
標(biāo)簽: uchar unsigned 11.0569 include
上傳時間: 2013-12-12
上傳用戶:Breathe0125
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