/in/foo.cc: In function 'void Get_String(int)':
/in/foo.cc:99:19: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   while(c=getchar())
                   ^
/in/foo.cc:93:8: 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:93:10: 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:153:22: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
      while(c=getchar())
                      ^