The Fibonacci numbers can be defined as follows:

• $F_0=0$
• $F_1=1$
• $F_n = F_{n-2}+F_{n-1}$

Your task is to calculate the value of $F_n$ for a given $n$ .

The only input line has an integer $n$ .

• $0 \le n \le 10^{18}$

Print the value of $F_n$ modulo $10^9+7$ .