#include<stdio.h>

int Fibonacci(int n)
{ 
    if(n == 1)
        return n;
 
    return (Fibonacci(n-1)+Fibonacci(n-2));
}

int main()
{
	int N = 0;
	scanf("%d",&N);
	
	int h = 0, w = 0;
	h = Fibonacci(N);
	w = h + Fibonacci(N-1)
	
	printf("%d:%d",h,w);
	return 0;
}