/in/foo.cc: In function 'void build(long long int, long long int, long long int)':
/in/foo.cc:28:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   28 |     int mid=l+r>>1;
      |             ~^~
/in/foo.cc: In function 'void modify(long long int, long long int, long long int)':
/in/foo.cc:40:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |     int mid=tr[u].l+tr[u].r>>1;
      |             ~~~~~~~^~~~~~~~
/in/foo.cc: In function 'long long int query(long long int, long long int, long long int)':
/in/foo.cc:48:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   48 |     int mid=tr[u].l+tr[u].r>>1,res=0;
      |             ~~~~~~~^~~~~~~~