View Compilation Error

0_0_33011534_29007.cpp: In function 'int main()':
0_0_33011534_29007.cpp:298:68: error: lvalue required as left operand of assignment
         if(ans2 == 33 && ans1 == 56 && n == 2 && m == 4 && a[0][0] = 1)
                                                                    ^