View Compilation Error

0_0_15641139_18775.cpp: In function 'int main()':
0_0_15641139_18775.cpp:38:32: error: expected ']' before ')' token
     sum += hash1[-c*i*i - d*j*j) + OFFSET];
                                ^
0_0_15641139_18775.cpp:38:32: error: expected ';' before ')' token