View Compilation Error

0_0_33192393_2407.cpp: In function 'int main()':
0_0_33192393_2407.cpp:36:11: error: 'a' was not declared in this scope
    cin >> a[i];
           ^
0_0_33192393_2407.cpp:37:4: error: 'dp' was not declared in this scope
    dp[i] = 1;
    ^