#include<bits/stdc++.h>
using namespace std;
int main(){
    int b,c;
    float n,p;
    cin>>n;
    b=n+8;
    c=b-2;
    p=(n+b+c)/3*1.0;
    cout<<n<<endl<<b<<endl<<c<<endl;
    printf("%.1f",p);
}
/**************************************************************
	Problem: 1612
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/