View Compilation Error

0_0_24685208_3803.cpp:7:5: error: conflicting declaration 'int a'
 int a,b;
     ^
0_0_24685208_3803.cpp:5:5: note: previous declaration as 'int a [1005]'
 int a[1005];
     ^
0_0_24685208_3803.cpp: In function 'int main()':
0_0_24685208_3803.cpp:25:22: error: invalid types 'int [1005][1005][int [1005]]' for array subscript
    printf("%d\n",dp[a][b]);
                      ^