#include<iostream>
using namespace std;
int main()
{
//freopen("road.in","r",stdin);
//freopen("road.out","w",stdout);
long long n,d;
long long k,h=0,i,l=0,m=0,v=0,y=0,s=1,s1=1;
cin>>n>>d;
int a[n],b[(n+1)];
for(i=1;i<n;i++)
cin>>a[i];
for(i=1;i<=n;i++)
cin>>b[i];
while(y==0){
h=0;
for(i=(s+1);i<=n;i++){
if((b[i]<b[s])||(i==n)){
k=(i-s);break;
}
}
for(i=1;i<=k;i++){
h=h+a[i];
s++;
}
h-=v;
cout<<"h="<<h<<' ';
l=h/d;
if(h%d!=0)l++;
cout<<"l="<<l<<' ';
v+=l*d;
m+=l*b[s1];