import java.util.Scanner;


public class Day1Java {

	int fibb(int a,int b) {
		for(int i=0;i<no;i++){
			int c=a+b;
			a=b;
			b=c;
			return(c);
		}
	}

	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		System.out.println("enter number of terms: ");
		int no=sc.nextInt();
		int a=0,b=1,c;
		Day1Java day1Java=new Day1Java();
		day1Java.fibb(a,b);
		sc.close();
	}
}