Language: C++

#include <bits/stdc++.h>

using namespace std;

#define int long long

const int N = 1e5 + 5;
int k;

vector<long long> getDiv(long long x)
{
    vector<long long> Res;
    Res.clear();
    Res.push_back(1);
    int Lim = sqrt(x) + 1;
    for (int i = 2; i <= Lim; i++)
    {
        if (x % i == 0)
        {
            int SZ = Res.size();
            long long t = 1;
            while (x % i == 0)
            {
                t = t * i;
                x /= i;
                for (int j = 0; j < SZ; j++)
                {
                    Res.push_back(Res[j] * t);
                }
            }
            Lim = sqrt(x) + 1;
        }
    }
    if (x > 1)
    {
        int SZ = Res.size();
        for (int i = 0; i < SZ; i++)
        {
            Res.push_back(Res[i] * x);
        }
    }
    return Res;
}

main() {
  ios_base::sync_with_stdio(false);
  cin >> k;
  vector <int> c;
  vector <int> e = get(k);
  for(auto &v : e) c.push_back(v);
  e = get(k - 1);
  for(auto &v : e) c.push_back(v);
  sort(begin(c), end(c)); c.erase(unique(begin(c), end(c)), end(c));
  int cnt = 0;
  for(auto &v : c) {
    if(v == 1) continue;
    int n = k;
    while(n % v == 0) n /= v;
    int u = n % v;
    cnt += (u == 1);
  }
  cout << cnt;
}


Compiler output:
a.cc:45:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   45 | main() {
      | ^~~~
a.cc: In function 'int main()':
a.cc:49:23: error: no matching function for call to 'get(long long int&)'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 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_pair.h:1250:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(pair<_Tp1, _Tp2>&)'
 1250 |     get(pair<_Tp1, _Tp2>& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1250:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1255:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(pair<_Tp1, _Tp2>&&)'
 1255 |     get(pair<_Tp1, _Tp2>&& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1255:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1260:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(const pair<_Tp1, _Tp2>&)'
 1260 |     get(const pair<_Tp1, _Tp2>& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1260:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::pair<_Tp1, _Tp2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1265:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(const pair<_Tp1, _Tp2>&&)'
 1265 |     get(const pair<_Tp1, _Tp2>&& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1265:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::pair<_Tp1, _Tp2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/usr/include/c++/14/tuple:2445:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >& std::get(tuple<_Elements ...>&)'
 2445 |     get(tuple<_Elements...>& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2445:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::tuple<_Elements ...>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/tuple:2451:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >& std::get(const tuple<_Elements ...>&)'
 2451 |     get(const tuple<_Elements...>& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2451:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::tuple<_Elements ...>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/tuple:2457:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >&& std::get(tuple<_Elements ...>&&)'
 2457 |     get(tuple<_Elements...>&& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2457:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::tuple<_Elements ...>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/tuple:2466:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >&& std::get(const tuple<_Elements ...>&&)'
 2466 |     get(const tuple<_Elements...>&& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2466:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::tuple<_Elements ...>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
In file included from /usr/include/c++/14/functional:65,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/array:390:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp& std::get(array<_Tp, _Nm>&)'
  390 |     get(array<_Tp, _Nm>& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:390:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::array<_Tp, _Nm>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/array:399:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp&& std::get(array<_Tp, _Nm>&&)'
  399 |     get(array<_Tp, _Nm>&& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:399:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::array<_Tp, _Nm>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/array:408:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp& std::get(const array<_Tp, _Nm>&)'
  408 |     get(const array<_Tp, _Nm>& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:408:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::array<_Tp, _Nm>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/array:417:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp&& std::get(const array<_Tp, _Nm>&&)'
  417 |     get(const array<_Tp, _Nm>&& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:417:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::array<_Tp, _Nm>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1272:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp& std::get(pair<_T1, _T2>&)'
 1272 |     get(pair<_Tp, _Up>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1272:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::pair<_T1, _T2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1277:5: note: candidate: 'template<class _Tp, class _Up> constexpr const _Tp& std::get(const pair<_T1, _T2>&)'
 1277 |     get(const pair<_Tp, _Up>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1277:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::pair<_T1, _T2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1282:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp&& std::get(pair<_T1, _T2>&&)'
 1282 |     get(pair<_Tp, _Up>&& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1282:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::pair<_T1, _T2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1287:5: note: candidate: 'template<class _Tp, class _Up> constexpr const _Tp&& std::get(const pair<_T1, _T2>&&)'
 1287 |     get(const pair<_Tp, _Up>&& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1287:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::pair<_T1, _T2>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1292:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp& std::get(pair<_Up, _Tp>&)'
 1292 |     get(pair<_Up, _Tp>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1292:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::pair<_Up, _Tp>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1297:5: note: candidate: 'template<class _Tp, class _Up> constexpr const _Tp& std::get(const pair<_Up, _Tp>&)'
 1297 |     get(const pair<_Up, _Tp>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1297:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'const std::pair<_Up, _Tp>' and 'long long int'
   49 |   vector <int> e = get(k);
      |                    ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1302:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp&& std::get(pair<_Up, _Tp>&&)'
 1302 |     get(pair<_Up, _Tp>&& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1302:5: note:   template argument deduction/substitution failed:
a.cc:49:23: note:   mismatched types 'std::pa