View Compilation Error

0_0_37308901_9288.cpp: In function 'int main()':
0_0_37308901_9288.cpp:2:12: error: expected primary-expression before 'long'
 #define ll long long 
            ^
0_0_37308901_9288.cpp:15:7: note: in expansion of macro 'll'
    if(ll(sqrt(a*a-4*b))*ll(sqrt(a*a-4*b))==a*a-4*b)
       ^
0_0_37308901_9288.cpp:2:12: error: expected ')' before 'long'
 #define ll long long 
            ^
0_0_37308901_9288.cpp:15:7: note: in expansion of macro 'll'
    if(ll(sqrt(a*a-4*b))*ll(sqrt(a*a-4*b))==a*a-4*b)
       ^