#include<iostream> 
#include<cstdio>
int main(){
	double a;
	scanf("%lf",&a);
	printf("%lf\n",a);
	printf("%.5lf\n",a);
	printf("%e\n",a);
	printf("%g",a);
	return 0;
}

#include <iostream>
using namespace std;
int main()
{
    double a;
    cin>>a;
    printf("%f",a);
    printf("\n%.5f",a);
    printf("\n%e",a);
    printf("\n%g",a);
    return 0;
}

#include <bits/stdc++.h> using namespace std; int main() { double ff; cin >> ff; printf("%f\n%.5f\n%e\n%g", ff, ff, ff, ff); return 0; }