#include "stdafx.h"
#include<iostream>
using namespace std;
int items[20000000];
unsigned long long sumsArr[1000000];


int main()
{
    int n,k,q;
    scanf("%d %d %d", &n, &k, &q);
    for (int i = 0; i < n; i++)
    {
        scanf("%d", &items[i]);
    }
    int sums = n - k+1;
    int sumIndex = 0;
    int sumEndIndex = k;

    for (int i = 0; i < k; i++)
    {
        sumsArr[sumIndex] += items[i];
    }
    for (int i = 1; i < sums; i++)
    {
        sumsArr[sumIndex + 1] = sumsArr[sumIndex] - items[sumIndex] + items[sumEndIndex];
        sumIndex++;
        sumEndIndex++;
    }
    int counter = 0;
    while (counter<q)
    {
        unsigned long long number;
        scanf("%llu", &number);
        int counter2 = 0;
        while (counter2 < sums && sumsArr[counter2]<number)
        {
            counter2++;
        }
        if (counter2 < sums) printf("%d\n", counter2);
        else printf("-1\n");
        counter++;
    }
    return 0;
}