#include<bits/stdc++.h>
using namespace std;
int main(){
    float n,f,g,h;
    cin>>n;
    f=n+8;
    h=f-2;
    g=(n+f+h)/3.0;
    cout<<n<<endl;
    cout<<f<<endl;
    cout<<h<<endl;
    printf("%.1f",g);
}
/**************************************************************
	Problem: 1612
	User: huanglingkai
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/