/in/foo.cc: In function 'void build(long long int, long long int, long long int)':
/in/foo.cc:29:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |         int mid=l+r>>1;
      |                 ~^~
/in/foo.cc: In function 'void modify(long long int, long long int, long long int, long long int)':
/in/foo.cc:40:24: 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:51:30: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   51 |         int res=0,mid=tr[u].l+tr[u].r>>1;
      |                       ~~~~~~~^~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:62:16: warning: 'T' is used uninitialized [-Wuninitialized]
   62 |         while(T--){
      |               ~^~
/in/foo.cc:61:13: note: 'T' was declared here
   61 |         int T;
      |             ^