View Compilation Error

0_0_23113628_5440.cpp:6:7: error: 'MAX' was not declared in this scope
 LL dp[MAX];  
       ^
0_0_23113628_5440.cpp: In function 'int main()':
0_0_23113628_5440.cpp:14:18: error: 'dp' was not declared in this scope
         memset ( dp , -1 , sizeof ( dp ) );  
                  ^
0_0_23113628_5440.cpp:14:42: error: 'memset' was not declared in this scope
         memset ( dp , -1 , sizeof ( dp ) );  
                                          ^
0_0_23113628_5440.cpp:19:63: error: 'max' was not declared in this scope
                     dp[j] = max ( dp[j] , dp[j-1] + 2*dp[j-2] );  
                                                               ^
0_0_23113628_5440.cpp:21:51: error: 'max' was not declared in this scope
                     dp[j] = max ( dp[j] , dp[j-1] );  
                                                   ^