AtCoder Beginner Contest 367 is over. Problem B this time is very good.

It says: Give you a real number to the third decimal place. Delete the unnecessary zeros and '.' .

I saw many participants using string and .pop_back(), but I have a simpler way:

Just input and then output (C++), because it can help you delete them.

Code:

#include<bits/stdc++.h>
using namespace std;
double a;
int main(){
	cin>>a;
	cout<<a<<endl;
	return 0;
}

This takes you less time in the contest.