Language: C++

/*
 * 	Heart beats fast
 * 		Colors and promises
 * 			How to be brave
 * 				How can I love when I am afraid to fall...
*/
#include<bits/stdc++.h>
// #include<boost/multiprecision/cpp_int.hpp>
// using namespace boost::multiprecision;
using namespace std;
#define int long long
#define mod 1000000007
#define FAST ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define f(i,n) for(int i=0;i<n;i++)
#define fp(i,k,n) for(int i=k;i<=n;i++)
#define fr(i,k,n) for(int i=k;i>=n;i--)
#define pb push_back
#define F first
#define S second

void solve()
{
  int n,p;
  cin >> n >> p;
  string s;
  cin >> s;
  if(p == 2 || p == 5){
			int ans = 0;
			for(int i = 0; i < n; i++){
				if((s[i] - '0') % p == 0)
					ans += i + 1;
			}
			cout << ans;
			return ;
		}
  int cnt=0,r=0;
  map<int,int> m;
  m[0]=1;
  int q=1;
  fr(i,n-1,0)
  {
    r=((s[i]-'0')*q +r)%m;
    q*=10;
    cnt+=m[r];
    m[r]++;
  }
  cout << cnt ;
  return;
}

signed main()
{
  FAST;
	int T=1;
	// cin >> T;
	while(T--)
	{
		solve();
	}
    return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:42:24: error: no match for 'operator%' (operand types are 'long long int' and 'std::map<long long int, long long int>')
   42 |     r=((s[i]-'0')*q +r)%m;
      |       ~~~~~~~~~~~~~~~~~^~
      |                     |   |
      |                     |   std::map<long long int, long long int>
      |                     long long int
In file included from /usr/include/c++/14/valarray:605,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:166,
                 from a.cc:7:
/usr/include/c++/14/bits/valarray_after.h:409:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__modulus, typename _Dom1::value_type>::result_type> std::operator%(const _Expr<_Dom1, typename _Dom1::value_type>&, const _Expr<_Dom2, typename _Dom2::value_type>&)'
  409 |     _DEFINE_EXPR_BINARY_OPERATOR(%, struct std::__modulus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:409:5: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'long long int'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^
/usr/include/c++/14/bits/valarray_after.h:409:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__modulus, typename _Dom1::value_type>::result_type> std::operator%(const _Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)'
  409 |     _DEFINE_EXPR_BINARY_OPERATOR(%, struct std::__modulus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:409:5: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'long long int'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^
/usr/include/c++/14/bits/valarray_after.h:409:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__modulus, typename _Dom1::value_type>::result_type> std::operator%(const typename _Dom::value_type&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
  409 |     _DEFINE_EXPR_BINARY_OPERATOR(%, struct std::__modulus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:409:5: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   'std::map<long long int, long long int>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^
/usr/include/c++/14/bits/valarray_after.h:409:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__modulus, typename _Dom1::value_type>::result_type> std::operator%(const _Expr<_Dom1, typename _Dom1::value_type>&, const valarray<typename _Dom::value_type>&)'
  409 |     _DEFINE_EXPR_BINARY_OPERATOR(%, struct std::__modulus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:409:5: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'long long int'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^
/usr/include/c++/14/bits/valarray_after.h:409:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__modulus, typename _Dom1::value_type>::result_type> std::operator%(const valarray<typename _Dom::value_type>&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
  409 |     _DEFINE_EXPR_BINARY_OPERATOR(%, struct std::__modulus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:409:5: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   'std::map<long long int, long long int>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^
/usr/include/c++/14/valarray:1200:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__modulus, _Tp>::result_type> std::operator%(const valarray<_Tp>&, const valarray<_Tp>&)'
 1200 | _DEFINE_BINARY_OPERATOR(%, __modulus)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1200:1: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   mismatched types 'const std::valarray<_Tp>' and 'long long int'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^
/usr/include/c++/14/valarray:1200:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__modulus, _Tp>::result_type> std::operator%(const valarray<_Tp>&, const typename valarray<_Tp>::value_type&)'
 1200 | _DEFINE_BINARY_OPERATOR(%, __modulus)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1200:1: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   mismatched types 'const std::valarray<_Tp>' and 'long long int'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^
/usr/include/c++/14/valarray:1200:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__modulus, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__modulus, _Tp>::result_type> std::operator%(const typename valarray<_Tp>::value_type&, const valarray<_Tp>&)'
 1200 | _DEFINE_BINARY_OPERATOR(%, __modulus)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1200:1: note:   template argument deduction/substitution failed:
a.cc:42:25: note:   'std::map<long long int, long long int>' is not derived from 'const std::valarray<_Tp>'
   42 |     r=((s[i]-'0')*q +r)%m;
      |                         ^