Language: C++

#include<iostream>
using namespace std;
int main()
{
long long n,sum1,sum2,sum3,sum4,sum5,ans;
char a[100006][200];
    cin>>n;
    for(int i=1;i<=n;i++)cin>>a[i];
    for(int i=1;i<=n;i++)
    {
        if(a[i][0]=='M')sum1++;
        if(a[i][0]=='A')sum2++;
        if(a[i][0]=='R')sum3++;
        if(a[i][0]=='C')sum4++;
        if(a[i][0]=='H')sum5++;
    }
    ans+=sum1*sum2*sum3;
    ans+=sum1*sum2*sum4;
    ans+=sum1*sum2*sum5;
    ans+=sum1*sum3*sum4;
    ans+=sum1*sum3*sum5;
    ans+=sum1*sum4*sum5;
    ans+=sum2*sum3*sum4;
    ans+=sum2*sum3*sum5;
    ans+=sum2*sum4*sum5;
    ans+=sum3*sum4*sum5;
    cout<<ans<<endl;
    return 0;
}

Compiler output:
a.cc:7:1: error: extended character   is not valid in an identifier
    7 |     cin>>n;
      | ^
a.cc:7:1: error: extended character   is not valid in an identifier
a.cc:7:1: error: extended character   is not valid in an identifier
a.cc:7:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
    8 |     for(int i=1;i<=n;i++)cin>>a[i];
      | ^
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:8:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
    9 |     for(int i=1;i<=n;i++)
      | ^
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:9:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
   10 |     {
      | ^
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:10:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
   11 |         if(a[i][0]=='M')sum1++;
      | ^
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:11:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
   12 |         if(a[i][0]=='A')sum2++;
      | ^
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:12:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
   13 |         if(a[i][0]=='R')sum3++;
      | ^
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:13:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
   14 |         if(a[i][0]=='C')sum4++;
      | ^
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:14:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
   15 |         if(a[i][0]=='H')sum5++;
      | ^
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:15:1: error: extended character   is not valid in an identifier
a.cc:16:1: error: extended character   is not valid in an identifier
   16 |     }
      | ^
a.cc:16:1: error: extended character   is not valid in an identifier
a.cc:16:1: error: extended character   is not valid in an identifier
a.cc:16:1: error: extended character   is not valid in an identifier
a.cc:17:1: error: extended character   is not valid in an identifier
   17 |     ans+=sum1*sum2*sum3;
      | ^
a.cc:17:1: error: extended character   is not valid in an identifier
a.cc:17:1: error: extended character   is not valid in an identifier
a.cc:17:1: error: extended character   is not valid in an identifier
a.cc:18:1: error: extended character   is not valid in an identifier
   18 |     ans+=sum1*sum2*sum4;
      | ^
a.cc:18:1: error: extended character   is not valid in an identifier
a.cc:18:1: error: extended character   is not valid in an identifier
a.cc:18:1: error: extended character   is not valid in an identifier
a.cc:19:1: error: extended character   is not valid in an identifier
   19 |     ans+=sum1*sum2*sum5;
      | ^
a.cc:19:1: error: extended character   is not valid in an identifier
a.cc:19:1: error: extended character   is not valid in an identifier
a.cc:19:1: error: extended character   is not valid in an identifier
a.cc:20:1: error: extended character   is not valid in an identifier
   20 |     ans+=sum1*sum3*sum4;
      | ^
a.cc:20:1: error: extended character   is not valid in an identifier
a.cc:20:1: error: extended character   is not valid in an identifier
a.cc:20:1: error: extended character   is not valid in an identifier
a.cc:21:1: error: extended character   is not valid in an identifier
   21 |     ans+=sum1*sum3*sum5;
      | ^
a.cc:21:1: error: extended character   is not valid in an identifier
a.cc:21:1: error: extended character   is not valid in an identifier
a.cc:21:1: error: extended character   is not valid in an identifier
a.cc:22:1: error: extended character   is not valid in an identifier
   22 |     ans+=sum1*sum4*sum5;
      | ^
a.cc:22:1: error: extended character   is not valid in an identifier
a.cc:22:1: error: extended character   is not valid in an identifier
a.cc:22:1: error: extended character   is not valid in an identifier
a.cc:23:1: error: extended character   is not valid in an identifier
   23 |     ans+=sum2*sum3*sum4;
      | ^
a.cc:23:1: error: extended character   is not valid in an identifier
a.cc:23:1: error: extended character   is not valid in an identifier
a.cc:23:1: error: extended character   is not valid in an identifier
a.cc:24:1: error: extended character   is not valid in an identifier
   24 |     ans+=sum2*sum3*sum5;
      | ^
a.cc:24:1: error: extended character   is not valid in an identifier
a.cc:24:1: error: extended character   is not valid in an identifier
a.cc:24:1: error: extended character   is not valid in an identifier
a.cc:25:1: error: extended character   is not valid in an identifier
   25 |     ans+=sum2*sum4*sum5;
      | ^
a.cc:25:1: error: extended character   is not valid in an identifier
a.cc:25:1: error: extended character   is not valid in an identifier
a.cc:25:1: error: extended character   is not valid in an identifier
a.cc:26:1: error: extended character   is not valid in an identifier
   26 |     ans+=sum3*sum4*sum5;
      | ^
a.cc:26:1: error: extended character   is not valid in an identifier
a.cc:26:1: error: extended character   is not valid in an identifier
a.cc:26:1: error: extended character   is not valid in an identifier
a.cc:27:1: error: extended character   is not valid in an identifier
   27 |     cout<<ans<<endl;
      | ^
a.cc:27:1: error: extended character   is not valid in an identifier
a.cc:27:1: error: extended character   is not valid in an identifier
a.cc:27:1: error: extended character   is not valid in an identifier
a.cc:28:1: error: extended character   is not valid in an identifier
   28 |     return 0;
      | ^
a.cc:28:1: error: extended character   is not valid in an identifier
a.cc:28:1: error: extended character   is not valid in an identifier
a.cc:28:1: error: extended character   is not valid in an identifier
a.cc: In function 'int main()':
a.cc:7:1: error: '\U000000a0\U000000a0\U000000a0\U000000a0cin' was not declared in this scope
    7 |     cin>>n;
      | ^~~~~~~
a.cc:8:9: error: expected primary-expression before 'int'
    8 |     for(int i=1;i<=n;i++)cin>>a[i];
      |         ^~~
a.cc:8:17: error: 'i' was not declared in this scope
    8 |     for(int i=1;i<=n;i++)cin>>a[i];
      |                 ^
a.cc:9:9: error: expected primary-expression before 'int'
    9 |     for(int i=1;i<=n;i++)
      |         ^~~
a.cc:17:1: error: '\U000000a0\U000000a0\U000000a0\U000000a0ans' was not declared in this scope
   17 |     ans+=sum1*sum2*sum3;
      | ^~~~~~~
a.cc:27:1: error: '\U000000a0\U000000a0\U000000a0\U000000a0cout' was not declared in this scope
   27 |     cout<<ans<<endl;
      | ^~~~~~~~
a.cc:28:1: error: '\U000000a0\U000000a0\U000000a0\U000000a0return' was not declared in this scope
   28 |     return 0;
      | ^~~~~~~~~~