Language: C++

#include <bits/stdc++.h>
using namespace std;
int n, arr[100000],max=0,curr=0;
int main(){
    cin >> n;
    for (int i=0; i<n;i++){ // populate arr
        cin >> arr[i];
    }
    for (int i=0; i<n; i++){ // try starting from each elem
        curr = 0;
        for (int j=i; j<n-i; j++){ // try moving forward
            if (arr[j+1]>arr[j]){
                break;
            }
            curr++;
        }
        if (curr > max){
            max = curr;
        }
    }
    cout << max;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:20: error: reference to 'max' is ambiguous
   17 |         if (curr > max){
      |                    ^~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidates are: '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:5706:5: note:                 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
In file included from /usr/include/c++/14/algorithm:60:
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:                 '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:257:5: note:                 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
a.cc:3:20: note:                 'int max'
    3 | int n, arr[100000],max=0,curr=0;
      |                    ^~~
a.cc:18:13: error: reference to 'max' is ambiguous
   18 |             max = curr;
      |             ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidates are: '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:5706:5: note:                 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:                 '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:257:5: note:                 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
a.cc:3:20: note:                 'int max'
    3 | int n, arr[100000],max=0,curr=0;
      |                    ^~~
a.cc:21:13: error: reference to 'max' is ambiguous
   21 |     cout << max;
      |             ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidates are: '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:5706:5: note:                 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:                 '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:257:5: note:                 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
a.cc:3:20: note:                 'int max'
    3 | int n, arr[100000],max=0,curr=0;
      |                    ^~~