0_0_38599300_19689.cpp: In function 'int main()':
0_0_38599300_19689.cpp:9:12: error: no match for 'operator<<' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'int')
cin<<n;
~~~^~~
0_0_38599300_19689.cpp:9:12: note: candidate: 'operator<<(int, int)' <built-in>
0_0_38599300_19689.cpp:9:12: note: no known conversion for argument 1 from 'std::istream' {aka 'std::basic_istream<char>'} to 'int'
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/regex:62,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:110,
from 0_0_38599300_19689.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/regex.h:1523:5: note: candidate: 'template<class _Ch_type, class _Ch_traits, class _Bi_iter> std::basic_ostream<_CharT, _Traits>& std::__cxx11::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::sub_match<_Bi_iter>&)'
operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os,
^~~~~~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/regex.h:1523:5: note: template argument deduction/substitution failed:
0_0_38599300_19689.cpp:9:14: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<n;
^
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:45,
from 0_0_38599300_19689.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/cstddef:124:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator<<(std::byte, _IntegerType)'
operator<<(byte __b, _IntegerType __shift) noexcept
^~~~~~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/cstddef:124:5: note: template argument deduction/substitution failed:
0_0_38599300_19689.cpp:9:14: note: cannot convert 'std::cin' (type 'std::istream' {aka 'std::basic_istream<char>'}) to type 'std::byte'
cin<<n;
^
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/basic_string.h:48,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:52,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_38599300_19689.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string_view:542:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::basic_string_view<_CharT, _Traits>)'
operator<<(basic_ostream<_CharT, _Traits>& __os,
^~~~~~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string_view:542:5: note: template argument deduction/substitution failed:
0_0_38599300_19689.cpp:9:14: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<n;
^
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:52,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_38599300_19689.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/basic_string.h:6327:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
operator<<(basic_ostream<_CharT, _Traits>& __os,
^~~~~~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/basic_string.h:6327:5: note: template argument deduction/substitution failed:
0_0_38599300_19689.cpp:9:14: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<n;
^
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:46,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_38599300_19689.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/system_error:217:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)'
operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
^~~~~~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/system_error:217:5: note: template argument deduction/substitution failed:
0_0_38599300_19689.cpp:9:14: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<n;
^
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_38599300_19689.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:500:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)'
operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
^~~~~~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:500:5: note: template argument deduction/substitution failed:
0_0_38599300_19689.cpp:9:14: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<n;
^
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_38599300_19689.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:505:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)'
operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
^~~~~~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ostream:505:5: note: template argument deduction/substitution failed:
0_0_38599300_19689.cpp:9:14: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<n;
^
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:39,
from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
from gcc-8.5.0/lib/gcc/x86_64-w64-mi
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