Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <utility>
using namespace std;



bool enough( long T, int A, int B, vector<int>& h )
{
    long long numNecessaryAtacks = 0;
    for( int i = 0; i < h.size(); ++i )
    {
        numNecessaryAtacks += max( 0, (h[i] - B*T + (A-B-1)) / (A - B) );
        
    }
    return numNecessaryAtacks <= T;
}



int main()
{
    int N, A, B;
    cin >> N >> A >> B;
    vector<int> h(N);
    for( int i = 0; i < N; ++i ) cin >> h[i];


    // 二分探索
    int l = 0, r = 1e+9;
    while( r-l > 1 )
    {
        int c = ( l + r ) / 2;
        if( enough(c, A, B, h) ) r = c;
        else l = c; 
    }
    cout << r << endl;

    return 0;
}

Compiler output:
a.cc: In function 'bool enough(long int, int, int, std::vector<int>&)':
a.cc:14:34: error: no matching function for call to 'max(int, long int)'
   14 |         numNecessaryAtacks += max( 0, (h[i] - B*T + (A-B-1)) / (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:14:34: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long int')
   14 |         numNecessaryAtacks += max( 0, (h[i] - B*T + (A-B-1)) / (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:3:
/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:14:34: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   14 |         numNecessaryAtacks += max( 0, (h[i] - B*T + (A-B-1)) / (A - B) );
      |                               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~