/in/foo.cc: In function 'void build(int&, int, int)':
/in/foo.cc:22:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m=L+R>>1;
           ~^~
/in/foo.cc: In function 'void update(int, int&, int, int, int, int)':
/in/foo.cc:37:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=L+R>>1;
        ~^~
/in/foo.cc: In function 'int query(int, int, int, int, int)':
/in/foo.cc:45:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=L+R>>1;
        ~^~