View Compilation Error

0_0_16065567_2325.cpp: In function 'int main()':
0_0_16065567_2325.cpp:11:19: error: 'cin' was not declared in this scope
             while(cin>>n)
                   ^
0_0_16065567_2325.cpp:12:9: error: 'cout' was not declared in this scope
         cout<<dp[n]<<endl;
         ^
0_0_16065567_2325.cpp:12:22: error: 'endl' was not declared in this scope
         cout<<dp[n]<<endl;
                      ^