/in/foo.cc: In function 'void pushdown(int, int, int)':
/in/foo.cc:15:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=l+r>>1;
        ~^~
/in/foo.cc: In function 'void build(int, int, int)':
/in/foo.cc:42:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=l+r>>1;
        ~^~
/in/foo.cc: In function 'void Add(int, int, int, int, int, int)':
/in/foo.cc:56:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=l+r>>1;
        ~^~
/in/foo.cc: In function 'void Set(int, int, int, int, int, int)':
/in/foo.cc:72:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=l+r>>1;
        ~^~
/in/foo.cc: In function 'll qmax(int, int, int, int, int)':
/in/foo.cc:81:9: 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:93:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=l+r>>1;
        ~^~