#include<bits/stdc++.h>
#pragma GCC optimize("O3")

using namespace std;

long long n, m;

long long ridput(long long a, long long b, long long MOD)
{
    long long ans = 1;

    while(b)
    {
        if(b % 2)
            ans *= a;
        a *= a;
        b = b >> 1;
        a %= MOD;
        ans %= MOD;
    }
    return ans;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    freopen("inversmodular.in", "r", stdin);
    freopen("inversmodular.out", "w", stdout);

    cin >> n >> m;
    cout << ridput(n, m - 2, m);
}