#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
int n,a[30005],m;
long long ans;
bool cmp(int a,int b)
{
return a>b;
}
int main()
{
cin>>n>>m;
for(int i=1;i<=n;i++)
scanf("%d",&a[i]);
sort(a+1,a+n+1,cmp);
ans=a[1];
for(int i=1;i<n;i++)
ans=(ans+a[i+1])/m;
cout<<ans;
return 0;
}
错得不知所措
求助各位!!!