package main

import (
	"fmt"
	"math/big"
)

func add() {
	a := big.NewInt(100)
	b := big.NewInt(10)
	c := &big.Int{}
	c.Add(a, b)
	fmt.Println(c)
}

func div() {
	a := big.NewInt(100)
	b := big.NewInt(10)
	c := &big.Int{}
	c.Div(a, b)
	fmt.Println(c)
}
func divMod() {
	a := big.NewInt(102)
	b := big.NewInt(10)
	c := &big.Int{}
	m := &big.Int{}
	c.DivMod(a, b, m)
	fmt.Println(c, m)
}
func mod() {
	a := big.NewInt(102)
	b := big.NewInt(10)
	c := &big.Int{}
	c.Mod(a, b)
	fmt.Println(c)
}
func mul() {
	a := big.NewInt(102)
	b := big.NewInt(10)
	c := &big.Int{}
	c.Mul(a, b)
	fmt.Println(c)
}

var fibs [1005]*big.Int

func fib(n int) (res *big.Int) {
	if n <= 1 {
		res = big.NewInt(1)
	} else {
		temp := new(big.Int)
		res = temp.Add(fibs[n-1], fibs[n-2])
	}
	fibs[n] = res
	return
}
func bigNum() {

	var strNum1, strNum2 string
	fmt.Println("请输入数据1：")
	fmt.Scanln(&strNum1)
	fmt.Println("请输入数据2：")
	fmt.Scanln(&strNum2)
	big1, _ := new(big.Int).SetString(strNum1, 10)
	big2, _ := new(big.Int).SetString(strNum2, 10)
	res := &big.Int{}
	res.Add(big1, big2)
	fmt.Println(res)

}
func neg() {
	a := big.NewInt(10)
	b := big.NewInt(200)
	a.Neg(a)
	c := new(big.Int)
	c.Add(a, b)
	fmt.Println(c)
}
func main() {
	//bigNum()
	neg()
}