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0_0_14300241_32526.cpp:26:22: error: 'char strrev [100010]' redeclared as different kind of symbol
 char str[N], strrev[N];
                      ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstring:42:0,
                 from 0_0_14300241_32526.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/string.h:113:17: note: previous declaration 'char* strrev(char*)'
   char *__cdecl strrev(char *_Str) __MINGW_ATTRIB_DEPRECATED_MSVC2005;
                 ^