Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <utility>
#include <tuple>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <cmath>
#include <iomanip>
#include <functional>
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define REP(i, n) for (int i = 1; i < (int)(n); ++i)
using namespace std;
using lint = int64_t;

int main() {
    int N;
    lint A, B;
    cin >> N >> A >> B;
    vector<lint> h(N);
    rep(i, N) cin >> h[i];
    
    int left = 0;
    int right = 1000000000;
    while (right - left > 1) {
        int mid = (right + left) / 2;
        auto H = h;
        rep(i, N) H[i] -= B * mid;
        lint cnt = 0;
        rep(i, N) cnt += max(0LL, (H[i] - 1 + (A - B)) / (A - B));
        if (cnt <= mid) right = mid;
        else left = mid;
    }
    cout << right << "\n";
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:33:29: error: no matching function for call to 'max(long long int, __gnu_cxx::__alloc_traits<std::allocator<long int>, long int>::value_type)'
   33 |         rep(i, N) cnt += max(0LL, (H[i] - 1 + (A - B)) / (A - B));
      |                          ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:33:29: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__alloc_traits<std::allocator<long int>, long int>::value_type' {aka 'long int'})
   33 |         rep(i, N) cnt += max(0LL, (H[i] - 1 + (A - B)) / (A - B));
      |                          ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:4:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:33:29: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   33 |         rep(i, N) cnt += max(0LL, (H[i] - 1 + (A - B)) / (A - B));
      |                          ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~