function [A,c,b,M,B,x0,eps]=ex5(x)
s=2*x;
A(1,1:x-1)=2;
A(1,x)=1;
A(2:x+1,:)=eye(x);
A(:,x+1:s+1)=eye(x+1);
A=A(:,[1:x x+2:s+1])


c=zeros(2*x,1);
c(x)=-1
b=[x];
b(2:x+1)=ones(x,1)
b=b';
M=[1:x]
B=[x:s]
x0=zeros(x-1,1);
x0(x)=x;
x0(x+1:s)=ones(x,1);
x0=x0'

eps=1e-3;



return;