/**/
#include <cstdio>
#include <cstring>
#include <cmath>
#include <cctype>
#include <iostream>
#include <algorithm>
#include <map>
#include <set>
#include <vector>
#include <string>
#include <stack>
#include <queue>

typedef long long LL;
using namespace std;

int h, w, n;
int t[4 * 200005];

void build(int p, int l, int r){
	t[p] = w;
	if(l == r) return ;
	int mid = (l + r) >> 1;
	build(p << 1, l, mid);
	build(p << 1 | 1, mid + 1, r);
}

int modify(int p, int l, int r, int x){
	if(l == r){
		t[p] -= x;
		return l;
	}
	int mid = (l + r) >> 1;
	int ans = (t[p << 1] >= x) ? modify(p << 1, l, mid, x) : modify(p << 1 | 1, mid + 1, r, x);
	t[p] = max(t[p << 1], t[p << 1 | 1]);
	return ans;
}

int main()
{
	//freopen("in.txt", "r", stdin);
	//freopen("out.txt", "w", stdout);

	while(scanf("%d %d %d", &h, &w, &n) == 3){
		if(h > n) h = n;
		build(1, 1, h);
		int len;
		for (int i = 1; i <= n; i++){
			scanf("%d", &len);
			if(t[1] < len){
				printf("-1\n");
			}else{
				printf("%d\n", modify(1, 1, h, len));
			}
		}
	}

	return 0;
}
/**/