Language: C++

#include<bits/stdc++.h>
using namespace std;
char s[11];
int a[5];
int main()
{
    int n;
    scanf("%d",&n);
    memset(a,0,sizeof(a));
    for(int i=0;i<n;i++)
    {
        scanf("%s",s);
        if(s[0]=='M')
            a[0]++;
        else if(s[0]=='A')
            a[1]++;
        else if(s[0]=='R')
            a[2]++;
        else if(s[0]=='C')
            a[3]++;
        else if(s[0]=='H')
            a[4]++;
    }
    sort(a,a+5);
    int t=upper_bound(a,a+5,0)-a;
    long long ans=0;
    if(t>=3)
        printf("0\n");
    else if(t==2)
    {
        ans=a[2]*a[3]*a[4];
        printf("%lld\n",ans);
    }
    else if(t==1)
    {
        ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
        printf("%lld\n",ans);
    }
    else if(t==0)
    {
        ans+=a[0]*a[1]*a[2]+a[0]*a[1]*a[3]+a[0]*a[1]*a[4];
        ans+=a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*a[4];
        ans+=a[0]*a[3]*a[4]+a[0]*a[2]*a[3]+a[0]*a[2]*a[4]+a[1]*a[3]*a[4];
        printf("%lld\n",ans);
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:36:56: error: expected identifier before numeric constant
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                        ^
a.cc: In lambda function:
a.cc:36:58: error: expected '{' before '+' token
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
a.cc: In function 'int main()':
a.cc:36:54: error: no match for 'operator*' (operand types are 'int' and 'main()::<lambda()>')
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                             ~~~~~~~~~^~~~
      |                                                 |     |
      |                                                 int   main()::<lambda()>
In file included from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/complex:400:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator*(const complex<_Tp>&, const complex<_Tp>&)'
  400 |     operator*(const complex<_Tp>& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/complex:400:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   mismatched types 'const std::complex<_Tp>' and 'int'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/complex:409:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator*(const complex<_Tp>&, const _Tp&)'
  409 |     operator*(const complex<_Tp>& __x, const _Tp& __y)
      |     ^~~~~~~~
/usr/include/c++/14/complex:409:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   mismatched types 'const std::complex<_Tp>' and 'int'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/complex:418:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator*(const _Tp&, const complex<_Tp>&)'
  418 |     operator*(const _Tp& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/complex:418:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   'main()::<lambda()>' is not derived from 'const std::complex<_Tp>'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
In file included from /usr/include/c++/14/valarray:605,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:166:
/usr/include/c++/14/bits/valarray_after.h:407:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__multiplies, typename _Dom1::value_type>::result_type> std::operator*(const _Expr<_Dom1, typename _Dom1::value_type>&, const _Expr<_Dom2, typename _Dom2::value_type>&)'
  407 |     _DEFINE_EXPR_BINARY_OPERATOR(*, struct std::__multiplies)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:407:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/bits/valarray_after.h:407:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__multiplies, typename _Dom1::value_type>::result_type> std::operator*(const _Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)'
  407 |     _DEFINE_EXPR_BINARY_OPERATOR(*, struct std::__multiplies)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:407:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/bits/valarray_after.h:407:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__multiplies, typename _Dom1::value_type>::result_type> std::operator*(const typename _Dom::value_type&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
  407 |     _DEFINE_EXPR_BINARY_OPERATOR(*, struct std::__multiplies)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:407:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   'main()::<lambda()>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/bits/valarray_after.h:407:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__multiplies, typename _Dom1::value_type>::result_type> std::operator*(const _Expr<_Dom1, typename _Dom1::value_type>&, const valarray<typename _Dom::value_type>&)'
  407 |     _DEFINE_EXPR_BINARY_OPERATOR(*, struct std::__multiplies)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:407:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/bits/valarray_after.h:407:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__multiplies, typename _Dom1::value_type>::result_type> std::operator*(const valarray<typename _Dom::value_type>&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
  407 |     _DEFINE_EXPR_BINARY_OPERATOR(*, struct std::__multiplies)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:407:5: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   'main()::<lambda()>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/valarray:1198:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__multiplies, _Tp>::result_type> std::operator*(const valarray<_Tp>&, const valarray<_Tp>&)'
 1198 | _DEFINE_BINARY_OPERATOR(*, __multiplies)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1198:1: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/valarray:1198:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__multiplies, _Tp>::result_type> std::operator*(const valarray<_Tp>&, const typename valarray<_Tp>::value_type&)'
 1198 | _DEFINE_BINARY_OPERATOR(*, __multiplies)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1198:1: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^
/usr/include/c++/14/valarray:1198:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__multiplies, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__multiplies, _Tp>::result_type> std::operator*(const typename valarray<_Tp>::value_type&, const valarray<_Tp>&)'
 1198 | _DEFINE_BINARY_OPERATOR(*, __multiplies)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1198:1: note:   template argument deduction/substitution failed:
a.cc:36:58: note:   'main()::<lambda()>' is not derived from 'const std::valarray<_Tp>'
   36 |         ans+= a[1]*a[2]*a[3]+a[1]*a[2]*a[4]+a[2]*a[3]*[4]+a[1]*a[3]*a[4];
      |                                                          ^