/in/foo.cc: In function 'void pushdown(int, int, int)':
/in/foo.cc:28:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m=L+R>>1;
           ~^~
/in/foo.cc: In function 'void build(int&, int, int)':
/in/foo.cc:41:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int m=L+R>>1;
          ~^~
/in/foo.cc: In function 'void Update(int, int&, int, int, int, int, int)':
/in/foo.cc:55:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m=L+R>>1;
           ~^~
/in/foo.cc: In function 'll qsum(int, int, int, int, int)':
/in/foo.cc:71:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int m=L+R>>1;
          ~^~