/in/foo.cc: In function 'void pushdown(int, int, int)':
/in/foo.cc:35:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m=L+R>>1;
           ~^~
/in/foo.cc: In function 'void build(int&, int, int)':
/in/foo.cc:49:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int m=L+R>>1;
          ~^~
/in/foo.cc: In function 'void update(int, int&, int, int, int, int, int)':
/in/foo.cc:69:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int m=L+R>>1;
           ~^~
/in/foo.cc: In function 'LL qsum(int, int, int, int, int)':
/in/foo.cc:93:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int m=L+R>>1;
          ~^~