func_code_string: #include <bits/stdc++.h>   using namespace std;   template <class T>   void read(vector<T>& a) {     for (auto& e : a) {       cin >> e;     }   }   template <class T>   void print(vector<T>& a) {     for (auto& e : a) {       cout << e <<    ;     }     cout <<   n ;   }   void solve() {     long long n, h;     cin >> n >> h;     vector<long long> a(n);     read(a);     if (n == 1) {       cout << h <<   n ;       return;     }     vector<long long> b;     for (long long i = 1; i < n; ++i) {       b.push_back(a[i] - a[i - 1]);     }     long long l = 0, r = 1e18;     while (l + 1 != r) {       long long m = (l + r) / 2;       long long res = m;       for (long long i = 0; i < n - 1; ++i) {         res += min(m, b[i]);       }       if (res >= h) {         r = m;       } else {         l = m;       }     }     cout << r <<   n ;   }   signed main() {     ios::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     long long t;     cin >> t;     while (t--) solve();   }   