View Compilation Error

0_0_24295529_24828.cpp: In function 'int main()':
0_0_24295529_24828.cpp:10:26: error: 'BN' was not declared in this scope
         cin>>AH>>AM>>AS>>BN>>BM>>BS;
                          ^
0_0_24295529_24828.cpp:24:36: error: 'ensd' was not declared in this scope
         cout<<H<<ends<<M<<ends<<S<<ensd;
                                    ^