View Compilation Error

0_0_26015021_13213.cpp: In function 'int main()':
0_0_26015021_13213.cpp:27:95: error: expected ')' before ';' token
         ll sum=((quick(2,a+c)%mod)*((b+d+1)%mod+(quick(2,a)%mod)*(quick(2,b)%mod-b-1)%mod)%mod;
                                                                                               ^