#include <fstream>

using namespace std;

ifstream cin("inversmodular.in");
ofstream cout("inversmodular.out");
int M;
long long mod(long long  a, int b)
{
	long long p=1;
	while(b)
	{
		if(b%2==1)
			p=(1LL*((p%M)*(a%M)))%M;
		a=(1LL*(a%M)*(a%M))%M;
		b/=2;
	}
	return p;
}

int main()
{
    long long n;
    cin>>n>>M;
    cout<<mod(n,M-2);
    return 0;
}