Language: C++

//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
template<class T> inline bool chmax(T& a,T b){if(a<b){a=b;return 1;} return 0;}
template<class T> inline bool chmin(T& a,T b){if(a>b){a=b;return 1;} return 0;}
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(vec) vec.begin(),vec.end()
typedef long long ll;
typedef pair<ll,ll> l_l;
typedef pair<int,int> i_i;
const ll MOD=1e9+7;
const int INF=1<<30;

const int mod=1000000007;
struct mint{
  ll x;
  mint(ll x=0):x((x%mod+mod)%mod){}
  mint operator-() const{return mint(-x);}
  mint& operator+=(const mint a){
    if((x+=a.x)>=mod) x-=mod;
    return *this;
  }
  mint& operator-=(const mint a){
    if((x+=mod-a.x)>=mod) x-=mod;
    return *this;
  }
  mint& operator*=(const mint a){
    (x*=a.x)%=mod;
    return *this;
  }
  mint operator+(const mint a) const{
    mint res(*this);
    return res+=a;
  }
  mint operator-(const mint a) const{
    mint res(*this);
    return res-=a;
  }
  mint operator*(const mint a) const{
    mint res(*this);
    return res*=a;
  }
  mint pow(ll t) const{
    if(!t) return 1;
    mint a=pow(t>>1);
    a*=a;
    if(t&1) a*=*this;
    return a;
  }

  // for prime mod
  mint inv() const{
    return pow(mod-2);
  }
  mint& operator/=(const mint a){
    return (*this)*=a.inv();
  }
  mint operator/(const mint a) const{
    mint res(*this);
    return res/=a;
  }
};

mint c[60];

int main(){
  int N; cin >>N;
  vector<ll> a(N);
  rep(i,N) cin >> a[i];
  rep(i,N){
    for(int j=0;j<60;j++){
      if(a[i]&(1ll<<j)) c[j]++;
    }
  }
  mint ans=0;
  rep(j,60){
    ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
  }
  cout << ans.x << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:72:29: error: no 'operator++(int)' declared for postfix '++' [-fpermissive]
   72 |       if(a[i]&(1ll<<j)) c[j]++;
      |                         ~~~~^~
a.cc:77:22: error: no match for 'operator*' (operand types are 'long long int' and 'mint')
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |          ~~~~~~~~~~~~^~~~~
      |                  |       |
      |                  |       mint
      |                  long long int
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:2:
/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:77:26: note:   mismatched types 'const std::complex<_Tp>' and 'long long int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   mismatched types 'const std::complex<_Tp>' and 'long long int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   'mint' is not derived from 'const std::complex<_Tp>'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
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:77:26: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'long long int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'long long int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   'mint' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'long long int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   'mint' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   mismatched types 'const std::valarray<_Tp>' and 'long long int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   mismatched types 'const std::valarray<_Tp>' and 'long long int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
/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:77:26: note:   'mint' is not derived from 'const std::valarray<_Tp>'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                          ^
a.cc:77:30: error: no match for 'operator-' (operand types are 'int' and 'mint')
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                             ~^~~~~
      |                             |    |
      |                             int  mint
In file included from /usr/include/c++/14/bits/stl_algobase.h:67,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_iterator.h:618:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr decltype ((__y.base() - __x.base())) std::operator-(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  618 |     operator-(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:618:5: note:   template argument deduction/substitution failed:
a.cc:77:34: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                                  ^
/usr/include/c++/14/bits/stl_iterator.h:1790:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr decltype ((__x.base() - __y.base())) std::operator-(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1790 |     operator-(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1790:5: note:   template argument deduction/substitution failed:
a.cc:77:34: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |                                  ^
/usr/include/c++/14/complex:370:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator-(const complex<_Tp>&, const complex<_Tp>&)'
  370 |     operator-(const complex<_Tp>& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/complex:370:5: note:   template argument deduction/substitution failed:
a.cc:77:34: note:   mismatched types 'const std::complex<_Tp>' and 'int'
   77 |     ans+=(1ll<<j)%MOD*c[j]*(N-c[j]);
      |