View Compilation Error

0_0_29381065_29604.cpp: In function 'void main_add(int, int)':
0_0_29381065_29604.cpp:150:5: error: expected ')' before 'if'
     if (l == r)
     ^
0_0_29381065_29604.cpp:157:38: error: 'mid' was not declared in this scope
     if (query(seg_tree, seg_lazy, l, mid) == 0)
                                      ^
0_0_29381065_29604.cpp:159:35: error: 'mid' was not declared in this scope
     if (query(seg_tree, seg_lazy, mid+1, r) == 0)
                                   ^