View Compilation Error

0_0_29504155_30643.cpp: In function 'int32_t main()':
0_0_29504155_30643.cpp:29:18: error: 'm' was not declared in this scope
             fo(i,m,9){
                  ^
0_0_29504155_30643.cpp:11:35: note: in definition of macro 'fo'
 #define fo(i, a, b) for (int i = (a); i <= (b); i++)
                                   ^
0_0_29504155_30643.cpp:31:17: error: 'sum' was not declared in this scope
                 sum+=21-y;
                 ^