#include <iostream>

using namespace std;

void fibo(unsigned long int);

unsigned long int f1,f2,f11,f22;
const unsigned long int keta=1000000000;

main(){
	unsigned long int N,M;
	unsigned long int F;
	
	//�����ݒ�
	f1=0;f2=1;f11=f22=0;
	
	cin >> N >> M;
	fibo(N);
	F=f22%M;
	F=(f2+F*keta)%M;
	
	cout << F << endl;
	return 0;
}

void fibo(unsigned long int N){
	unsigned long int a,aa;
	for(int i=3;i<=N;i++){
		a=f2+f1;
		aa=f22+f11+a/keta;
		a=a%keta;
		f1=f2;
		f11=f22;
		f2=a;
		f22=aa;
	//	cout<<f22<<f2<<endl;
	}
}