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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, m, p;
    cin >> n >> m;
    if(m <= 2){
        cout << (n <= 1) + (n <= 2) << '\n';
        return 0;
    }
    if(n == 1){
        ll len = m - 2;
        cout << len * (len + 1) / 2 + 2 << '\n';
        return 0;
    }
    vector<int> a = {1, 1}, cnt(n);
    a.reserve(2 * n);
    do{
        a.emplace_back(a.rbegin()[1] + a.back());
        if(a.back() >= n) a.back() -= n;
    }while(a.rbegin()[1] != 1 || a.back() != 1);
    a.pop_back();
    a.pop_back();
    const int r = a.size(), d = (m - 2) / r, rem = (m - 2) - r * d;
    int sv = 0;
    cnt[0]++;
    for(int i = 0; i < r; i++){
        sv += a[i];
        if(sv >= n) sv -= n;
        cnt[sv] += d;
        if(i < rem) cnt[sv]++;
    }
    ll ans = (a[rem] == 0) * 2;
    for(auto &&v : cnt) ans += (ll)(v) * (v - 1) / 2;
    cout << ans << '\n';

}