View Compilation Error

0_0_15538579_4734.cpp: In function 'int main()':
0_0_15538579_4734.cpp:41:18: error: invalid types 'int[int]' for array subscript
             pos[i] = i;
                  ^
0_0_15538579_4734.cpp:57:31: error: invalid types 'int[int]' for array subscript
         int ans = a[1] + pos[1];
                               ^
0_0_15538579_4734.cpp:59:32: error: invalid types 'int[int]' for array subscript
             ans ^= a[i] + pos[i];
                                ^