foo.cpp: In member function 'void tree::build(ll*, int, int, int)':
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:6:13: note: in expansion of macro 'M'
 #define L l,M,P
             ^
foo.cpp:28:21: note: in expansion of macro 'L'
             build(s,L);
                     ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:7:11: note: in expansion of macro 'M'
 #define R M+1,r,S
           ^
foo.cpp:29:21: note: in expansion of macro 'R'
             build(s,R);
                     ^
foo.cpp: In member function 'void tree::add(int, ll, int, int, int)':
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:36:19: note: in expansion of macro 'M'
             if(y<=M)
                   ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:6:13: note: in expansion of macro 'M'
 #define L l,M,P
             ^
foo.cpp:37:25: note: in expansion of macro 'L'
                 add(y,z,L);
                         ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:7:11: note: in expansion of macro 'M'
 #define R M+1,r,S
           ^
foo.cpp:39:25: note: in expansion of macro 'R'
                 add(y,z,R);
                         ^
foo.cpp: In member function 'll tree::query(int, int, int, int, int)':
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:45:18: note: in expansion of macro 'M'
         ?a[k]:t<=M
                  ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:6:13: note: in expansion of macro 'M'
 #define L l,M,P
             ^
foo.cpp:46:20: note: in expansion of macro 'L'
         ?query(s,t,L):s>M
                    ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:46:25: note: in expansion of macro 'M'
         ?query(s,t,L):s>M
                         ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:7:11: note: in expansion of macro 'M'
 #define R M+1,r,S
           ^
foo.cpp:47:20: note: in expansion of macro 'R'
         ?query(s,t,R)
                    ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:48:24: note: in expansion of macro 'M'
         :__gcd(query(s,M,L),
                        ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:6:13: note: in expansion of macro 'M'
 #define L l,M,P
             ^
foo.cpp:48:26: note: in expansion of macro 'L'
         :__gcd(query(s,M,L),
                          ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:49:15: note: in expansion of macro 'M'
         query(M+1,t,R));
               ^
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:7:11: note: in expansion of macro 'M'
 #define R M+1,r,S
           ^
foo.cpp:49:21: note: in expansion of macro 'R'
         query(M+1,t,R));
                     ^
foo.cpp: In member function 'void tree::merge(ll*, ll*, int, int, int)':
foo.cpp:3:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define M (l+r>>1)
             ^
foo.cpp:6:13: note: in expansion of macro 'M'
 #define L l,M,P
             ^
foo.cpp:53:23: note: in expansion of macro 'L'
             merge(s,t,L);
                       ^
foo.