0_0_14297498_29670.cpp: In function 'std::string Da(std::string, std::string)':
0_0_14297498_29670.cpp:27:19: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
ans.insert(0,'1');
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
from 0_0_14297498_29670.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:1314:7: note: initializing argument 2 of 'std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT, _Traits, _Alloc>::insert(std::basic_string<_CharT, _Traits, _Alloc>::size_type, const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; std::basic_string<_CharT, _Traits, _Alloc>::size_type = long long unsigned int]'
insert(size_type __pos, const _CharT* __s)
^
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