0_0_30030686_29132.cpp: In function 'int main()':
0_0_30030686_29132.cpp:52:22: error: no match for 'operator<<' (operand types are 'std::basic_ostream<char>::__ostream_type {aka std::basic_ostream<char>}' and '<unresolved overloaded function type>')
cout<<ans/n/(n-1)*2<<end
^
0_0_30030686_29132.cpp:52:22: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39:0,
from 0_0_30030686_29132.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:108:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>::__ostream_type& (*)(std::basic_ostream<_CharT, _Traits>::__ostream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(__ostream_type& (*__pf)(__ostream_type&))
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:108:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_ostream<char>::__ostream_type& (*)(std::basic_ostream<char>::__ostream_type&) {aka std::basic_ostream<char>& (*)(std::basic_ostream<char>&)}'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:117:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>::__ios_type& (*)(std::basic_ostream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>; std::basic_ostream<_CharT, _Traits>::__ios_type = std::basic_ios<char>]
operator<<(__ios_type& (*__pf)(__ios_type&))
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:117:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_ostream<char>::__ios_type& (*)(std::basic_ostream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:127:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(ios_base& (*__pf) (ios_base&))
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:127:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::ios_base& (*)(std::ios_base&)'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:166:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(long __n)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:166:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long int'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:170:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(unsigned long __n)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:170:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long unsigned int'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:174:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(bool) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(bool __n)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:174:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'bool'
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:609:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
from 0_0_30030686_29132.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ostream.tcc:91:5: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short int) [with _CharT = char; _Traits = std::char_traits<char>]
basic_ostream<_CharT, _Traits>::
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ostream.tcc:91:5: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short int'
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39:0,
from 0_0_30030686_29132.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:181:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(short unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(unsigned short __n)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:181:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short unsigned int'
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:609:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
from 0_0_30030686_29132.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ostream.tcc:105:5: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(int) [with _CharT = char; _Traits = std::char_traits<char>]
basic_ostream<_CharT, _Traits>::
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ostream.tcc:105:5: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'int'
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39:0,
from 0_0_30030686_29132.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:192:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(unsigned int __n)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:192:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'unsigned int'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:201:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(long long __n)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:201:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long int'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:205:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(unsigned long long __n)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:205:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long unsigned int'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:220:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(double) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(double __f)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:220:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'double'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:224:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(float) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(float __f)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:224:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'float'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:232:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long double) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream<char>]
operator<<(long double __f)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:232:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long double'
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:245:7: note: std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(c
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