View Compilation Error

0_0_33528799_5109.cpp: In function 'int main()':
0_0_33528799_5109.cpp:56:50: error: 'add' cannot be used as a function
    if (q == 1) add(ans, (long long)cur * n1 % mod);
                                                  ^
0_0_33528799_5109.cpp:57:82: error: 'add' cannot be used as a function
    else add(ans, (long long)cur * (r1 + mod - 1) % mod * modExp(q-1, mod-2) % mod);
                                                                                  ^