贝贝与外星人

#include<iostream>
#include<string>
#include<stdio.h>
#include<algorithm>
#include<cstring>
#include<cstdio>
#include <math.h>

using namespace std;

float b;
int main(){
    scanf("%f",&b);
    cout<<"0.";
    for(int i = 0;i<3;i++)
    {
        b = b*2;
        if(b>=1)
        {
            cout<<"1";
            b = b -1;
        }    
        else
            cout<<"0";
    }
    cout<<endl;
    //printf("%s
",a);
    return 0;
}