esum

= Xpost.statustext vSERVER = Xpost.getresponseheader ("Server") Vheader = Xpost.getallresponseheaders Vrsbody = Bytes2bstr (xpost.responsebody) Set Xpost = Nothing End Function Function Getstr (vstring,istring,dstring) Vsum = InStr (vrsbody,istring) If vsum = 0 Then getstr= "[None]": Exit Function Esum = InStr (vsum,vrsbody,dstring) If esum = 0 Then getstr= "[None]": Exit Function Getstr = Mid (Vrsbody,vs

. Open "Post", iurl, falseXpost. SendXstatus = xpost. StatusTstatus = xpost. statustextVserver = xpost. getResponseHeader ("server ")Vheader = xpost. getAllResponseHeadersVrsbody = bytes2bstr (xpost. responsebody)Set xpost = nothingEnd Function Function getstr (vstring, istring, dstring)Vsum = instr (vrsbody, istring)If vsum = 0 then getstr = "[none]": Exit FunctionEsum = instr (vsum, vrsbody, dstring)If esum = 0 then getstr = "[none]": Exit Functio

Topic Link http://poj.org/problem?id=3522kruskal+ and check the collection, attention to special cases such as 1, 0, 0, 1,1#include 2#include 3#include 4#include 5 using namespacestd;6 #defineMAXN 50057 structedge{8 intU,v,cost;9 };Ten intCompConstedge E1,ConstedgeE2) { One returne1.costE2.cost; A } - Edge ES[MAXN]; - intv,e; the intPAR[MAXN],RANK[MAXN]; - voidinit () { - for(intI=1; i){ -par[i]=i; + } - } + intFindintx) { A if(par[x]==x)returnx; at returnpar[x]=find (par[x]);

to operate.Formally, if G1 = (V1, E1) and G2 = (V2, E2) are game graphs, then their and gsum = (Vsum, esum) are defined as:Vsum = V1xv2,Esum = {(V1v2, w1v2) | (v1, W1) ∈e1}∪{(V1V2, v1w2) | (v2, W2) ∈e2}.Now, suppose we give two games G1 and G2. If we only know the P-state and N-states of individual games can we play good games and G1 + G2 correctly? The answer is in the negative. It is not difficult to see

4 14 5 25 3 26 4 17 2 18 3 29 4 210 5 311 5 1 B12 2 1 B13 3 1 B14 4 1 B15 2 3 B16 7 3 B17 3 2 B18 4 1 B19 5 1 B20 2 2 B21 1 1 B22 1 1 c23 2 3 C24 6 3 C25 3 2 C...The following table needs to be selected and grouped by class column. The A1, A2, and A3 fields are the sum of fields a in the TB table when flag = 1, 2, and 3 respectively.After selectionA1 A2 A3 class----------- + ------------ + ----------------- + --------------Sum (a) sum (a)Sum (a) sum (a) BSum (a) sum (a) cSum (a) sum (a) dSum (a

') # calculation residuals e eNumeric (length (x0)) for(linch 1: Length (x0)) {E[l]Xy[l] #得残差序列 (absolute value not taken)} cat ("Absolute Residual error:",'\ n'E'\ n') #计算相对误差 E2Numeric (length (x0)) for(sinch 1: Length (x0)) {E2[s]x0[s]) #得相对误差} cat ("Relative residuals:",'\ n', E2,'\ n','\ n') Cat ("residual sum of squares =", SUM (e^2),'\ n') Cat ("Average Relative error =", SUM (E2)/(Length (E2)-1)* -,"%",'\ n') Cat ("Relative precision =",(1-(SUM (E2)/(Length (E2)-1)))* -,"%",'\ n','\ n')

. torowvector, matrix. transpose, etc.Sparse matrix Let D = matrix. initsparse 3 3 [(1.0, 2.0); (3.0,); (,);] // init a sparse 3-by-3 matrix//val it : matrix = matrix [[1.0; 0.0; 0.0]// [0.0; 2.0; 0.0]// [0.0; 0.0; 3.0]]D.IsSparse // sparse test Let E = matrix. initsparse 100000 100000 [(1.0, 2.0); (3.0,); (,);] let Esum = Matrix.sum E However, map, fold, exists,... are not supported on sparse matrix.I