/*No.526 フィボナッチ数列の第N項をMで割った余りを求める*/
import java.io.*;
public class No526 {
	public static void main(String[] args) {
		try(BufferedReader input =new BufferedReader(new InputStreamReader(System.in))){
			String N_M[]=input.readLine().split(" ");
			long Ex_Fibo[]= new long[Integer.parseInt(N_M[0])];
			int devide=Integer.parseInt(N_M[1]);
			for(int i=0;i<Ex_Fibo.length;i++){
				if(i<=1){
					Ex_Fibo[i]=i%devide;
				}else{
					Ex_Fibo[i]=(Ex_Fibo[i-2]+Ex_Fibo[i-1])%devide;
				}
			}
			System.out.println(Ex_Fibo[Ex_Fibo.length-1]);
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}