#include<iostream>
#include<string>
#include<cmath>
#include<set>
using namespace std;

long long fabs(long long n){
    if(n==2)    return 1;
    if(n==1)    return 0;
    return (fabs(n-1)+fabs(n-2));
}

int main(void){
    long long N,M,num;
    cin >> N >> M;
    num = fabs(N);
    cout << (num%M) << endl;
    return 0;
}