#include<iostream>
#include"../matrix/matrix_def.cpp"
#include"../welcome/score_wel.cpp"
#include"../matrix/matrix_pro.cpp"
#include<math.h>
/*
███████╗██████╗  ██████╗ ███████╗                ███████╗███╗   ██╗ ██████╗ ██╗███╗   ██╗███████╗
██╔════╝██╔══██╗██╔════╝ ██╔════╝                ██╔════╝████╗  ██║██╔════╝ ██║████╗  ██║██╔════╝
█████╗  ██║  ██║██║  ███╗█████╗                  █████╗  ██╔██╗ ██║██║  ███╗██║██╔██╗ ██║█████╗
██╔══╝  ██║  ██║██║   ██║██╔══╝                  ██╔══╝  ██║╚██╗██║██║   ██║██║██║╚██╗██║██╔══╝
███████╗██████╔╝╚██████╔╝███████╗                ███████╗██║ ╚████║╚██████╔╝██║██║ ╚████║███████╗
╚══════╝╚═════╝  ╚═════╝ ╚══════╝                ╚══════╝╚═╝  ╚═══╝ ╚═════╝ ╚═╝╚═╝  ╚═══╝╚══════╝
Author：Edge
Web：likedge.top
Date：20200925
*/
double sigmoid_def()
{
cout<<exp(2)<<endl;
}