#include<bits/stdc++.h>
using namespace std;
int main(){
	int x; 
	float y,z,f;
	cin>>x;
	y=x*3.0;
	z=y-8.0;
	f=(x+y+z)/3;
	printf("%.0f\n%.0f\n%.1f",y,z,f);
	
}

/**************************************************************
	Problem: 1601
	User: zhengzihao3
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/