/in/foo.cc: In function 'void build(int&, int, int)':
/in/foo.cc:25:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=L+R>>1;
        ~^~
/in/foo.cc: In function 'void update(int, int&, int, int, int)':
/in/foo.cc:33:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=L+R>>1;
        ~^~
/in/foo.cc: In function 'int Kth(int, int, int, int, int)':
/in/foo.cc:47:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=L+R>>1;
        ~^~
/in/foo.cc: In function 'int Count(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 'int query(int, int, int, int, int)':
/in/foo.cc:65:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=L+R>>1;
        ~^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:93:9: warning: unused variable 'cmd' [-Wunused-variable]
     int cmd,x,y,k,a,b,ans=0;
         ^~~
/in/foo.cc:93:17: warning: unused variable 'k' [-Wunused-variable]
     int cmd,x,y,k,a,b,ans=0;
                 ^