View Compilation Error

0_0_14172916_14259.cpp:96:9: error: 'int cos' redeclared as different kind of symbol
 int A,B,cos,da[maxm],db[maxm],dc[maxm];
         ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cmath:44:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_14172916_14259.cpp:9:
GCC4.9.2/x86_64-w64-mingw32/include/math.h:139:18: note: previous declaration 'double cos(double)'
   double __cdecl cos(double _X);
                  ^
0_0_14172916_14259.cpp: In function 'int pan(int)':
0_0_14172916_14259.cpp:105:16: error: invalid operands of types '<unresolved overloaded function type>' and 'int' to binary 'operator*'
     if(cc==cos*mid&&ret==mid)return 1;
                ^
0_0_14172916_14259.cpp: In function 'int main()':
0_0_14172916_14259.cpp:123:12: error: overloaded function with no contextual type information
         cos=dis[B];
            ^