/in/foo.cc: In function 'void build(int&, int, int)':
/in/foo.cc:46:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1;
          ~^~
/in/foo.cc: In function 'void update(int, int, int, int, int, int)':
/in/foo.cc:61:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1;
          ~^~
/in/foo.cc: In function 'int query(int, int, int, int, int)':
/in/foo.cc:73:17: warning: overflow in implicit constant conversion [-Woverflow]
  if(i>j) return 1e18;
                 ^~~~
/in/foo.cc:76:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1; 
          ~^~