#include <iostream>
using namespace std;
typedef long long LL;
LL M;
LL FN(LL n){
	LL n1=1;
	LL n2=1;
	LL tmp;
	while (n-2>1){
		tmp=n1;
		n1+=n2;
		n2=tmp;
		n1%=M;
		n2%=M;
		n--;
	}
	return n1;
}
int main(int argc, char* argv[])
{
	int N;
	cin>>N>>M;
	cout<<FN(N)<<endl;
	return 0;
}