请求修正

#include<bits/stdc++.h>
using namespace std;
int main(){
	double b,a;
	cin>>b;
	a=b;
	if(b>=0) cout<<b;
	if(b<0) cout<<b*0-a;
	return 0;
}
/*
测试点信息
4ms/812.00KB
WA
#1
Wrong Answer.wrong answer Too long on line 1.
4ms/816.00KB
WA
#2
Wrong Answer.wrong answer Too long on line 1.
4ms/808.00KB
AC
#3
Accepted, 得分 20.ok accepted
4ms/812.00KB
AC
#4
Accepted, 得分 20.ok accepted
4ms/1.08MB
WA
#5
Wrong Answer.wrong answer Too long on line 1.
*/
//编译能过，答案也对？？？