how can i avoid the compiler error: std::transform?

Here is my C++ code (I'm using Visual C++ 2010):

int absd(int t)
{
    return abs(t);
}
int main()
{
    try
    {
        int dpi = 137;
        int dpiCriterionAry[] = {100, 150, 200, 300, 400, 500, 600};
        std::vector<int> vec(dpiCriterionAry, dpiCriterionAry + _countof(dpiCriterionAry));
        std::transform(vec.begin(), vec.end(), vec.begin(), std::bind1st(std::minus<int>(), dpi));
        std::transform(vec.begin(), vec.end(), vec.begin(), absd);
        //std::transform(vec.begin(), vec.end(), vec.begin(), abs);
        copy(vec.begin(), vec.end(), ostream_iterator<int>(cout, "\t"));
        cout << endl;
    }
    catch(exception& e)
    {
        cerr << e.what() << endl;
    }
    return 0;
}

when I uncomment the line:

//std::transform(vec.begin(), vec.end(), vec.begin(), abs);

I got the error message:

1>------ Build started: Project: Console, Configuration: Release Win32 ------ 
1>Build started 2012/10/16 21:17:19. 1>InitializeBuildStatus: 1>  Creating "..\Intermediate\Console.unsuccessfulbuild" because "AlwaysCreate" was specified. 1>ClCompile: 1>  Console.cpp
1>Console.cpp(16): error C2780: '_OutIt std::transform(_InIt1,_InIt1,_InIt2,_OutIt,_Fn2)' : expects 5 arguments - 4 provided 
1>          D:\ProgramFiles\VS 2010\VC\include\algorithm(1155) : see declaration of 'std::transform'
1>Console.cpp(16): error C2914: 'std::transform' : cannot deduce template argument as function argument is ambiguous 
1>Console.cpp(16): error C2914: 'std::transform' : cannot deduce template argument as function argument is ambiguous 
1>Console.cpp(16): error C2784: '_OutIt std::transform(_InIt,_InIt,_OutIt,_Fn1)' : could not deduce template argument for '_OutIt' from 'std::_Vector_iterator<_Myvec>' 
1>          with 
1>          [ 
1>              _Myvec=std::_Vector_val<int,std::allocator&