Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long



int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
//    ll x;
//    x=1ll << 59;
//    ll y=(1ll << 59) - 1ll;
//    cout<<((double)(x)==(double)(x-1))<<endl;
    ll n,X=0,X2=0,X3=0,X4=0,X5=0;
    cin>>n;
    string l1[n+1];
    set<char>s;
    for(int i=1;i<=n;i++){
        cin>>l1[i];
        if(l1[i][0]=='M')X++;
        else if(l1[i][0]=='R')X2++;
        else if(l1[i][0]=='A')X3++;
        else if(l1[i][0]=='C')X4++;
        else if(l1[i][0]=='H')X5++;
    }
    ll s=1;
    s=max(s,X*X2*X3);
    s=max(s,X*X2*X4);
    s=max(s,X*X2*X5);
    s=max(s,X*X4*X3);
    s=max(s,X*X5*X3);
    s=max(s,X*X4*X5);
    s=max(s,X2*X4*X3);
    s=max(s,X2*X5*X3);
    s=max(s,X2*X4*X5);
    s=max(s,X3*X4*X5);
    cout<<s;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:8: error: conflicting declaration 'long long int s'
   27 |     ll s=1;
      |        ^
a.cc:18:14: note: previous declaration as 'std::set<char> s'
   18 |     set<char>s;
      |              ^
a.cc:28:10: error: no matching function for call to 'max(std::set<char>&, long long int)'
   28 |     s=max(s,X*X2*X3);
      |       ~~~^~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 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:28:10: note:   deduced conflicting types for parameter 'const _Tp' ('std::set<char>' and 'long long int')
   28 |     s=max(s,X*X2*X3);
      |       ~~~^~~~~~~~~~~
/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:
/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:28:10: note:   'std::set<char>' is not derived from 'std::initializer_list<_Tp>'
   28 |     s=max(s,X*X2*X3);
      |       ~~~^~~~~~~~~~~
a.cc:29:10: error: no matching function for call to 'max(std::set<char>&, long long int)'
   29 |     s=max(s,X*X2*X4);
      |       ~~~^~~~~~~~~~~
/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:29:10: note:   deduced conflicting types for parameter 'const _Tp' ('std::set<char>' and 'long long int')
   29 |     s=max(s,X*X2*X4);
      |       ~~~^~~~~~~~~~~
/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
/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:29:10: note:   'std::set<char>' is not derived from 'std::initializer_list<_Tp>'
   29 |     s=max(s,X*X2*X4);
      |       ~~~^~~~~~~~~~~
a.cc:30:10: error: no matching function for call to 'max(std::set<char>&, long long int)'
   30 |     s=max(s,X*X2*X5);
      |       ~~~^~~~~~~~~~~
/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:30:10: note:   deduced conflicting types for parameter 'const _Tp' ('std::set<char>' and 'long long int')
   30 |     s=max(s,X*X2*X5);
      |       ~~~^~~~~~~~~~~
/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
/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:30:10: note:   'std::set<char>' is not derived from 'std::initializer_list<_Tp>'
   30 |     s=max(s,X*X2*X5);
      |       ~~~^~~~~~~~~~~
a.cc:31:10: error: no matching function for call to 'max(std::set<char>&, long long int)'
   31 |     s=max(s,X*X4*X3);
      |       ~~~^~~~~~~~~~~
/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:31:10: note:   deduced conflicting types for parameter 'const _Tp' ('std::set<char>' and 'long long int')
   31 |     s=max(s,X*X4*X3);
      |       ~~~^~~~~~~~~~~
/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
/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:31:10: note:   'std::set<char>' is not derived from 'std::initializer_list<_Tp>'
   31 |     s=max(s,X*X4*X3);
      |       ~~~^~~~~~~~~~~
a.cc:32:10: error: no matching function for call to 'max(std::set<char>&, long long int)'
   32 |     s=max(s,X*X5*X3);
      |       ~~~^~~~~~~~~~~
/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:32:10: note:   deduced conflicting types for parameter 'const _Tp' ('std::set<char>' and 'long long int')
   32 |     s=max(s,X*X5*X3);
      |       ~~~^~~~~~~~~~~
/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
/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:32:10: note:   'std::set<char>' is not derived from 'std::initializer_list<_Tp>'
   32 |     s=max(s,X*X5*X3);
      |       ~~~^~~~~~~~~~~
a.cc:33:10: error: no matching function for call to 'max(std::set<char>&, long long int)'
   33 |     s=max(s,X*X4*X5);
      |       ~~~^~~~~~~~~~~
/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:33:10: note:   deduced conflicting types for parameter 'const _Tp' ('std::set<char>' and 'long long int')
   33 |     s=max(s,X*X4*X5);
      |       ~~~^~~~~~~~~~~
/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
/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> __