/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Main{
    public static int fibo(int n) {
        if (n==1||n==2){
            return 1;
        }
        return fibo(n-1)+fibo(n-2);
    }
    public static void main(String[] args) {
        System.out.print(fibo(10));
    }
}