This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define pb push_back
using namespace std;
signed main(){
int n,m;
cin>>n>>m;
vector <int> a(n);
for(int i=0;i<n;i++)cin>>a[i];
int x=0,ans=0;
for(int i=0;i<n;i++){
if(x<a[i]){
int y=a[i]-x;
if(y>m){
x+=m;
ans++;
}
else x=a[i];
}
else{
x=a[i];
}
//cout<<x<<" ";
}
cout<<ans<<"\n";
}
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