View Compilation Error

0_0_19564498_17388.cpp: In member function 'void Segtree::build(int, int, int)':
0_0_19564498_17388.cpp:9:28: error: expected ',' or ';' before ')' token
 #define MID(a,b) ((a+b)>>1))
                            ^
0_0_19564498_17388.cpp:101:21: note: in expansion of macro 'MID'
             int mid=MID(lft,rht);
                     ^
0_0_19564498_17388.cpp: In member function 'void Segtree::updata(int, int, int, int, int, int, int)':
0_0_19564498_17388.cpp:9:28: error: expected ',' or ';' before ')' token
 #define MID(a,b) ((a+b)>>1))
                            ^
0_0_19564498_17388.cpp:117:21: note: in expansion of macro 'MID'
             int mid=MID(lft,rht);
                     ^
0_0_19564498_17388.cpp: In member function 'int Segtree::query(int, int, int, int, int, int)':
0_0_19564498_17388.cpp:9:28: error: expected ',' or ';' before ')' token
 #define MID(a,b) ((a+b)>>1))
                            ^
0_0_19564498_17388.cpp:129:21: note: in expansion of macro 'MID'
             int mid=MID(lft,rht),sum1=0,sum2=0;
                     ^