#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,a,s;
    cin>>n;
    a=n+8;
    s=n+8-2;
    float d;
    d=(a+s+n)/3.0;
    cout<<n<<endl<<a<<endl<<s<<endl; 
    printf("%.1f",d);
}
/**************************************************************
	Problem: 1612
	User: huangluowei
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/