View Compilation Error

0_0_25779599_28484.cpp: In function 'int main()':
0_0_25779599_28484.cpp:55:6: error: 'n' was not declared in this scope
   in(n),in(m);
      ^
0_0_25779599_28484.cpp:6:27: note: in definition of macro 'in'
 #define in(a) scanf("%d",&a)
                           ^
0_0_25779599_28484.cpp:55:12: error: 'm' was not declared in this scope
   in(n),in(m);
            ^
0_0_25779599_28484.cpp:6:27: note: in definition of macro 'in'
 #define in(a) scanf("%d",&a)
                           ^