View Compilation Error

0_0_37775573_7513.cpp: In function 'int main()':
0_0_37775573_7513.cpp:154:21: error: no matching function for call to 'Linear_Basis::MAX()'
         cout<<a.MAX()<<endl;
                     ^
0_0_37775573_7513.cpp:154:21: note: candidate is:
0_0_37775573_7513.cpp:53:15: note: long long int Linear_Basis::MAX(long long int)
     long long MAX(long long x){ 
               ^
0_0_37775573_7513.cpp:53:15: note:   candidate expects 1 argument, 0 provided