#include<bits/stdc++.h>
using namespace std;

long long MOD;

long long fastPow(long long nr, long long p){
    long long aux=1;
    while(p){
        if(p%2)
            aux=(aux*nr)%MOD;
        nr=(nr*nr)%MOD;
        p/=2;
    }
    return aux%MOD;
}

int main(){
    freopen("inversmodular.in","r",stdin);
    freopen("inversmodular.out","w",stdout);
    long long a;
    scanf("%lld%lld", &a, &MOD);
    printf("%lld", fastPow(a, MOD-2));
    return 0;
}