/in/foo.cc: In function 'void update(int, int, int, int, int)':
/in/foo.cc:27:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m = l+r>>1;
             ~^~
/in/foo.cc: In function 'T query(int, int, int, int, int)':
/in/foo.cc:39:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m = l+r>>1;
             ~^~
/in/foo.cc: In function 'void build(int, int, int)':
/in/foo.cc:61:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m = l+r>>1;
             ~^~