Main.cc:1:1: error: stray ‘\344’ in program 为孩子注入编程算法基因 ^ Main.cc:1:2: error: stray ‘\270’ in program 为孩子注入编程算法基因 ^ Main.cc:1:3: error: stray ‘\272’ in program 为孩子注入编程算法基因 ^ Main.cc:1:4: error: stray ‘\345’ in program 为孩子注入编程算法基因 ^ Main.cc:1:5: error: stray ‘\255’ in program 为孩子注入编程算法基因 ^ Main.cc:1:6: error: stray ‘\251’ in program 为孩子注入编程算法基因 ^ Main.cc:1:7: error: stray ‘\345’ in program 为孩子注入编程算法基因 ^ Main.cc:1:8: error: stray ‘\255’ in program 为孩子注入编程算法基因 ^ Main.cc:1:9: error: stray ‘\220’ in program 为孩子注入编程算法基因 ^ Main.cc:1:10: error: stray ‘\346’ in program 为孩子注入编程算法基因 ^ Main.cc:1:11: error: stray ‘\263’ in program 为孩子注入编程算法基因 ^ Main.cc:1:12: error: stray ‘\250’ in program 为孩子注入编程算法基因 ^ Main.cc:1:13: error: stray ‘\345’ in program 为孩子注入编程算法基因 ^ Main.cc:1:14: error: stray ‘\205’ in program 为孩子注入编程算法基因 ^ Main.cc:1:15: error: stray ‘\245’ in program 为孩子注入编程算法基因 ^ Main.cc:1:16: error: stray ‘\347’ in program 为孩子注入编程算法基因 ^ Main.cc:1:17: error: stray ‘\274’ in program 为孩子注入编程算法基因 ^ Main.cc:1:18: error: stray ‘\226’ in program 为孩子注入编程算法基因 ^ Main.cc:1:19: error: stray ‘\347’ in program 为孩子注入编程算法基因 ^ Main.cc:1:20: error: stray ‘\250’ in program 为孩子注入编程算法基因 ^ Main.cc:1:21: error: stray ‘\213’ in program 为孩子注入编程算法基因 ^ Main.cc:1:22: error: stray ‘\347’ in program 为孩子注入编程算法基因 ^ Main.cc:1:23: error: stray ‘\256’ in program 为孩子注入编程算法基因 ^ Main.cc:1:24: error: stray ‘\227’ in program 为孩子注入编程算法基因 ^ Main.cc:1:25: error: stray ‘\346’ in program 为孩子注入编程算法基因 ^ Main.cc:1:26: error: stray ‘\263’ in program 为孩子注入编程算法基因 ^ Main.cc:1:27: error: stray ‘\225’ in program 为孩子注入编程算法基因 ^ Main.cc:1:28: error: stray ‘\345’ in program 为孩子注入编程算法基因 ^ Main.cc:1:29: error: stray ‘\237’ in program 为孩子注入编程算法基因 ^ Main.cc:1:30: error: stray ‘\272’ in program 为孩子注入编程算法基因 ^ Main.cc:1:31: error: stray ‘\345’ in program 为孩子注入编程算法基因 ^ Main.cc:1:32: error: stray ‘\233’ in program 为孩子注入编程算法基因 ^ Main.cc:1:33: error: stray ‘\240’ in program 为孩子注入编程算法基因 ^ Main.cc:13:15: error: stray ‘\347’ in program 4861 tangcong 组合 C++ Accepted 0 MS 252 KB 476 2023-01-12 23:00:50 ^ Main.cc:13:16: error: stray ‘\273’ in program 4861 tangcong 组合 C++ Accepted 0 MS 252 KB 476 2023-01-12 23:00:50 ^ Main.cc:13:17: error: stray ‘\204’ in program 4861 tangcong 组合 C++ Accepted 0 MS 252 KB 476 2023-01-12 23:00:50 ^ Main.cc:13:18: error: stray ‘\345’ in program 4861 tangcong 组合 C++ Accepted 0 MS 252 KB 476 2023-01-12 23:00:50 ^ Main.cc:13:19: error: stray ‘\220’ in program 4861 tangcong 组合 C++ Accepted 0 MS 252 KB 476 2023-01-12 23:00:50 ^ Main.cc:13:20: error: stray ‘\210’ in program 4861 tangcong 组合 C++ Accepted 0 MS 252 KB 476 2023-01-12 23:00:50 ^ Main.cc:2:2: error: ‘Home’ does not name a type Home ^~~~ In file included from /usr/include/c++/7/iosfwd:40:0, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/bits/postypes.h:98:11: error: ‘ptrdiff_t’ does not name a type typedef ptrdiff_t streamsize; // Signed integral type ^~~~~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/new:120:31: error: declaration of ‘operator new’ as non-function void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^ /usr/include/c++/7/new:120:25: error: ‘size_t’ is not a member of ‘std’ void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^~~~~~ /usr/include/c++/7/new:120:25: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/new:122:33: error: declaration of ‘operator new []’ as non-function void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^ /usr/include/c++/7/new:122:27: error: ‘size_t’ is not a member of ‘std’ void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc) ^~~~~~ /usr/include/c++/7/new:122:27: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/new:134:25: error: declaration of ‘operator new’ as non-function void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:134:25: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:134:25: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/new:134:33: error: expected primary-expression before ‘const’ void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~ /usr/include/c++/7/new:136:27: error: declaration of ‘operator new []’ as non-function void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:136:27: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:136:27: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/new:136:35: error: expected primary-expression before ‘const’ void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT ^~~~~ /usr/include/c++/7/new:168:32: error: declaration of ‘operator new’ as non-function inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:168:32: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:168:32: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/new:168:40: error: expected primary-expression before ‘void’ inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~ /usr/include/c++/7/new:170:34: error: declaration of ‘operator new []’ as non-function inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~~~ /usr/include/c++/7/new:170:34: error: ‘size_t’ is not a member of ‘std’ /usr/include/c++/7/new:170:34: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/exception_ptr.h:40:0, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/new:170:42: error: expected primary-expression before ‘void’ inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT ^~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:362:31: error: ‘std::size_t’ has not been declared template ^~~~~~ /usr/include/c++/7/type_traits:363:25: error: ‘_Size’ was not declared in this scope struct is_array<_Tp[_Size]> ^~~~~ /usr/include/c++/7/type_traits:363:31: error: template argument 1 is invalid struct is_array<_Tp[_Size]> ^ /usr/include/c++/7/type_traits:561:42: error: ‘nullptr_t’ is not a member of ‘std’ struct __is_null_pointer_helper ^~~~~~~~~ /usr/include/c++/7/type_traits:561:42: note: suggested alternative: In file included from /usr/include/c++/7/bits/cxxabi_init_exception.h:38:0, from /usr/include/c++/7/bits/exception_ptr.h:38, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:444:29: note: ‘nullptr_t’ typedef decltype(nullptr) nullptr_t; ^~~~~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:561:42: error: ‘nullptr_t’ is not a member of ‘std’ struct __is_null_pointer_helper ^~~~~~~~~ /usr/include/c++/7/type_traits:561:42: note: suggested alternative: In file included from /usr/include/c++/7/bits/cxxabi_init_exception.h:38:0, from /usr/include/c++/7/bits/exception_ptr.h:38, from /usr/include/c++/7/exception:142, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:444:29: note: ‘nullptr_t’ typedef decltype(nullptr) nullptr_t; ^~~~~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:561:51: error: template argument 1 is invalid struct __is_null_pointer_helper ^ /usr/include/c++/7/type_traits:1464:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1464:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1464:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1464:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1464:61: error: template argument 1 is invalid : public integral_constant { }; ^ /usr/include/c++/7/type_traits:1464:61: note: invalid template non-type parameter /usr/include/c++/7/type_traits:1469:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1469:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1469:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1469:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1469:46: error: template argument 1 is invalid : public integral_constant { }; ^ /usr/include/c++/7/type_traits:1469:46: note: invalid template non-type parameter /usr/include/c++/7/type_traits:1471:31: error: ‘std::size_t’ has not been declared template ^~~~~~ /usr/include/c++/7/type_traits:1472:21: error: ‘_Size’ was not declared in this scope struct rank<_Tp[_Size]> ^~~~~ /usr/include/c++/7/type_traits:1472:27: error: template argument 1 is invalid struct rank<_Tp[_Size]> ^ /usr/include/c++/7/type_traits:1473:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant::value> { }; ^~~~~~ /usr/include/c++/7/type_traits:1473:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1473:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant::value> { }; ^~~~~~ /usr/include/c++/7/type_traits:1473:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1473:65: error: template argument 1 is invalid : public integral_constant::value> { }; ^ /usr/include/c++/7/type_traits:1473:65: note: invalid template non-type parameter /usr/include/c++/7/type_traits:1477:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant::value> { }; ^~~~~~ /usr/include/c++/7/type_traits:1477:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1477:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant::value> { }; ^~~~~~ /usr/include/c++/7/type_traits:1477:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1477:65: error: template argument 1 is invalid : public integral_constant::value> { }; ^ /usr/include/c++/7/type_traits:1477:65: note: invalid template non-type parameter /usr/include/c++/7/type_traits:1482:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1482:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/include/c++/7/type_traits:1482:37: error: ‘size_t’ is not a member of ‘std’ : public integral_constant { }; ^~~~~~ /usr/include/c++/7/type_traits:1482:37: note: suggested alternative: In file included from /usr/include/wchar.h:35:0, from /usr/include/c++/7/cwchar:44, from /usr/include/c++/7/bits/postypes.h:40, from /usr/include/c++/7/iosfwd:40, from /usr/include/c++/7/ios:38, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:15: /usr/lib/gcc/x86_64-linux-gnu/7/include/stddef.h:216:23: note: ‘size_t’ typedef __SIZE_TYPE__ size_t; ^~~~~~ In file included from /usr/include/c++/7/bits/move.h:54:0, from /usr/include/c++/7/bits/nested_exception.h:40, from /usr/include/c++/7/exception:143, from /usr/include/c++/7/ios:39, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39,