Language: C++

#include <bits/stdc++.h>
using namespace std;
#define m 1000000007

long long nCrModp(long long n, long long r) { 
    if (r > n - r) 
        r = n - r; 
    long long C[r + 1]; 
    memset(C, 0, sizeof(C)); 
    C[0] = 1;
    for (long long i = 1; i <= n; i++) { 
        for (long long j = min(i, r); j > 0; j--) 
            C[j] = (C[j] + C[j - 1]) % m; 
    } 
    return C[r]; 
} 
long long fact(long long n){
if(n==0|n==1) return 1;
  long long sa=fact(n-1);
  long long ans=((sa%m)*(n%m))%m;
  return ans;
}

int main(){
  long long n,m;
  cin>>n>>m;
  long long mcn=ncr(m,n);
  long long nf=fact(n);
  long long ans=((mcn%m)*(mcn%m))%m;
  ans=((ans%m)*(nf%m))%m;
  cout<<ans<<endl;
 return 0; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:11: error: expected unqualified-id before numeric constant
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:25:15: note: in expansion of macro 'm'
   25 |   long long n,m;
      |               ^
a.cc:26:9: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and 'int')
   26 |   cin>>n>>m;
      |   ~~~~~~^~
      |      |
      |      std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 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/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: warning: overflow in conversion from 'int' to 'short int' changes value from '1000000007' to '-13817' [-Woverflow]
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'short int&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: warning: unsigned conversion from 'int' to 'short unsigned int' changes value from '1000000007' to '51719' [-Woverflow]
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'short unsigned int&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'unsigned int&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'long int&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'long unsigned int&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'long long int&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'long long unsigned int&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:219:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  219 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:219:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'float&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:223:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  223 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:223:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'double&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:227:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  227 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:227:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: cannot bind non-const lvalue reference of type 'long double&' to a value of type 'int'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:3:11: error: invalid conversion from 'int' to 'void*' [-fpermissive]
    3 | #define m 1000000007
      |           ^~~~~~~~~~
      |           |
      |           int
a.cc:26:11: note: in expansion of macro 'm'
   26 |   cin>>n>>m;
      |           ^
a.cc:3:11: error: cannot bind rvalue '(void*)1000000007' to 'void*&'
    3 | #define m 1000000007
      |           ^~~~~~~~~~
a.cc:26:11: note: in expansion of