/in/foo.cc: In function 'void build(int, int, int)':
/in/foo.cc:24:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid=t[ro].ri+t[ro].le>>1;
           ~~~~~~~~^~~~~~~~~
/in/foo.cc: In function 'int query(int, int, int)':
/in/foo.cc:37:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid=t[ro].le+t[ro].ri>>1;
           ~~~~~~~~^~~~~~~~~