/in/foo.cc: In function 'int main()':
/in/foo.cc:75:36: warning: 'k.cla::p' may be used uninitialized in this function [-Wmaybe-uninitialized]
  else Dp[n+1]=Dp[n]+(D-oil[n].d)/d0*k.p;
                     ~~~~~~~~~~~~~~~^~~~
/in/foo.cc:70:20: warning: 'k.cla::num' may be used uninitialized in this function [-Wmaybe-uninitialized]
   while(q.top().num<=k.num)
         ~~~~~~~~~~~^~~~~~~