/in/foo.cc: In function 'void Insert(int, int, int, int, int)':
/in/foo.cc:13:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m=(l+r>>1);
            ~^~
/in/foo.cc: In function 'int Query(int, int, int, int)':
/in/foo.cc:32:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m=(l+r>>1);
            ~^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:51:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         Goal=(y-x+1>>1);
               ~~~^~