View Compilation Error

0_0_21753351_5910.cpp: In function 'int main()':
0_0_21753351_5910.cpp:77:40: error: 'DP' was not declared in this scope
         CLR(last);CLR(stat);CLR(a);CLR(DP);
                                        ^
0_0_21753351_5910.cpp:11:25: note: in definition of macro 'MST'
 #define MST(a,b) memset(a,b,sizeof(a))
                         ^
0_0_21753351_5910.cpp:77:36: note: in expansion of macro 'CLR'
         CLR(last);CLR(stat);CLR(a);CLR(DP);
                                    ^