View Compilation Error

0_0_19887476_8391.cpp: In function 'int main(int, char**)':
0_0_19887476_8391.cpp:33:24: error: 'sort' was not declared in this scope
   sort(aa+1,aa+m+1,cmp1);
                        ^
0_0_19887476_8391.cpp:33:24: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_19887476_8391.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:4705:5: note:   'std::sort'
     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
     ^
0_0_19887476_8391.cpp:43:1: error: expected '}' at end of input
 }
 ^