https://codeforces.com/problemset/problem/450/A

#include<bits/stdc++.h>
using namespace std;
int s[105];
queue<int>q;
int main(void)
{
	int n,m,x; cin>>n>>m;
	for(int i=1;i<=n;i++) cin>>s[i],q.push(i);
	while(q.size()>1)
	{
		int temp=q.front(); q.pop();
		if(s[temp]<=m) continue;
		else q.push(temp),s[temp]-=m;
	}
	cout<<q.front();
	return 0;
}