#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	float e;
	cin>>a;
	b=a+8;
	c=b-2;
	cout<<a<<endl<<b<<endl<<c<<endl;
	e=(a+b+c)*1.0/3;
	printf("%.1f",e);
	return 0;
}
/**************************************************************
	Problem: 1612
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/