// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
// #include <atcoder/all>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define all(a) (a).begin(), (a).end()
using namespace std;
// using namespace atcoder;
using ll = long long;
using P = pair<int, int>;
const int mod = 1e9 + 7;
// --------------------------------------------------------------------------------
void solve()
{
    int a, b;
    cin >> a >> b;
    for (int i = 0;; i++)
    {
        if (b == 1)
        {
            cout << 0 << endl;
            break;
        }
        if (b <= a * (i + 1) - i)
        {
            cout << i + 1 << endl;
            break;
        }
    }
}
// --------------------------------------------------------------------------------
int main()
{
    // srand((unsigned)time(NULL));
    // int bt = clock();
    solve();
    // double et = 1.0 * (clock() - bt) / CLOCKS_PER_SEC;
    // printf("Execution Time: %.4lf sec\n", et);
    return 0;
}
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("unroll-loops") 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp> 
#define int long long
#define fr(i,a,b) for(int i = a ; i <= b ; ++i)
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) (int)(x).size()
#define pb push_back
#define fst first
#define snd second
using namespace __gnu_pbds;
using ordered_set =
 tree<int, null_type,less<int>,
 rb_tree_tag,tree_order_statistics_node_update>;
//find_by_order(k):returns iterator to kth element starting from 0
//order_of_key(k):returns count of elements strictly smaller than k
typedef long long ll;typedef pair<int, int> pii;
typedef vector<int> vi;typedef long double ld;
template<class T>
using min_heap = priority_queue<T,vector<T>,greater<T>>; 
template<typename T> T gcd(T a, T b){return(b?__gcd(a,b):a);}
template<typename T> T lcm(T a, T b){return(a*(b/gcd(a,b)));}
template<class T> void re(T& x) { cin >> x; }
template<typename T> 
void remdup(vector<T>& v) {
	sort(all(v)); v.erase(unique(all(v)), v.end());
}
template<typename T> void re(vector<T> &v) {trav(i,v) cin >> i;}
template<class H, class... T> void re(H& h, T&... t) { re(h); re(t...); }
void unsyncIO() { ios_base::sync_with_stdio(0); cin.tie(0); }
#ifdef np
#include "/home/o_o/MyCodes/pr.h"
#else
#define trace(...)
#endif

#define MOD 1000000007  

void solve(){
	int a , b ;
	re(a,b);
	int cnt = 1 ; 
	cout << (a + b - 3) / (a-1) ;
}

signed main() {
	unsyncIO();
	int tt =1 ;
	// cin >> tt;
	rep(i,0,tt) solve();













#ifdef np
	cout <<endl<<endl<< "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
	return 0;
}
