Hdu 2899 Simple three points

The third part is the further determination of the interval value on the basis of the two points first divides the interval into three points and then updates the left and right interval values

#include <stdio.h> #include <string.h> #include <iostream>using namespaceStd;#define EXP 1e-6DoubleY; Double Pow (double A ,int B ) {  int I; Double X=1;  for (I=1;I<=B;I++) {X*=A; }  return X;} Double F (double X ) {  return 6*Pow(X,7)+8*Pow(X,6)+7*Pow(X,3)+5*Pow(X,2)-Y*X; ;} int Main () {  int T,I,J;scanf("%d",&T);  while (T--) {scanf("%LF",&Y); Double Row=0,Right= -;  while (Right-Row>Exp ) {  double Mid1=(2*Row+Right)/3; Double Mid2=(Row+2*Right)/3; if (F(Mid1) >F(Mid2))Row=Mid1; Else Right=Mid2; }Printf("%.4lf\n",F(Row)); }  return 0;}

Hdu 2899 Simple three points