View Compilation Error

0_0_29469885_16634.cpp: In function 'int main()':
0_0_29469885_16634.cpp:19:41: error: invalid types 'int[int]' for array subscript
     printf("%I64d\n",a[n][m][k]+b[n][m[k]);
                                         ^
0_0_29469885_16634.cpp:19:42: error: expected ']' before ')' token
     printf("%I64d\n",a[n][m][k]+b[n][m[k]);
                                          ^