#include<iostream>
#include<ctime>
#include<cstdlib>
srand(unsigned(time(0)));
double random(double start,double end)
{
return start+(end-start)*rand()/(RAND_MAX+1.0);
}
#include<iostream>
#include<ctime>
#include<cstdlib>
srand(unsigned(time(0)));
double random(double start,double end)
{
return start+(end-start)*rand()/(RAND_MAX+1.0);
}