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View Compilation Error

0_0_29913113_23618.cpp: In function 'int main()':
0_0_29913113_23618.cpp:94:13: error: reference to 'ws' is ambiguous
             ws[i] = wt[i] = 0;
             ^
0_0_29913113_23618.cpp:18:8: note: candidates are: double ws [505]
 double ws[N],wt[N];
        ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:879:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_29913113_23618.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/istream.tcc:1016:5: note:                 template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::ws(std::basic_istream<_CharT, _Traits>&)
     ws(basic_istream<_CharT, _Traits>& __in)
     ^
0_0_29913113_23618.cpp:107:13: error: reference to 'ws' is ambiguous
             ws[u] += (a + b) / 2.0;
             ^
0_0_29913113_23618.cpp:18:8: note: candidates are: double ws [505]
 double ws[N],wt[N];
        ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:879:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_29913113_23618.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/istream.tcc:1016:5: note:                 template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::ws(std::basic_istream<_CharT, _Traits>&)
     ws(basic_istream<_CharT, _Traits>& __in)
     ^
0_0_29913113_23618.cpp:109:13: error: reference to 'ws' is ambiguous
             ws[v] += (a + b) / 2.0;
             ^
0_0_29913113_23618.cpp:18:8: note: candidates are: double ws [505]
 double ws[N],wt[N];
        ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:879:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_29913113_23618.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/istream.tcc:1016:5: note:                 template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::ws(std::basic_istream<_CharT, _Traits>&)
     ws(basic_istream<_CharT, _Traits>& __in)
     ^
0_0_29913113_23618.cpp:117:22: error: reference to 'ws' is ambiguous
             adde(S,i,ws[i]);
                      ^
0_0_29913113_23618.cpp:18:8: note: candidates are: double ws [505]
 double ws[N],wt[N];
        ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:879:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_29913113_23618.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/istream.tcc:1016:5: note:                 template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::ws(std::basic_istream<_CharT, _Traits>&)
     ws(basic_istream<_CharT, _Traits>& __in)
     ^


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