View Compilation Error

0_0_15341478_31584.cpp: In function 'int main()':
0_0_15341478_31584.cpp:72:18: error: 'A2' was not declared in this scope
     cout << (mul(A2, ans.num[0][0], p) + mul(A1, ans.num[1][0], p)) % p << endl;
                  ^
0_0_15341478_31584.cpp:72:46: error: 'A1' was not declared in this scope
     cout << (mul(A2, ans.num[0][0], p) + mul(A1, ans.num[1][0], p)) % p << endl;
                                              ^