View Compilation Error

0_0_18832740_21058.cpp: In function 'int main()':
0_0_18832740_21058.cpp:44:35: error: invalid types 'int[int]' for array subscript
                 scanf("%d",&a[i][j]);
                                   ^
0_0_18832740_21058.cpp:45:27: error: invalid types 'int[int]' for array subscript
                 if (a[i][j]==1)
                           ^