/in/foo.cc: In function 'void Get_String(int)':
/in/foo.cc:106:19: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   while(c=getchar())
                   ^
/in/foo.cc:100:8: warning: variable 't' set but not used [-Wunused-but-set-variable]
  int p,t,z=k,x,d=FIND(now+1,Root);
        ^
/in/foo.cc:100:10: warning: unused variable 'z' [-Wunused-variable]
  int p,t,z=k,x,d=FIND(now+1,Root);
          ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:158:22: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
      while(c=getchar())
                      ^
/in/foo.cc: In function 'int FIND(int, int)':
/in/foo.cc:96:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^