#include <iostream>
#include <cstdio>
#include <algorithm>
#define MAXN 100050

using namespace std;

struct query
{
    int ind, st, dr;
    bool operator()(query e, query f)
    {
        return e.dr > f.dr;
    }
};
struct data
{
    int val, x, y;
    bool operator()(data e, data f)
    {
        return e.y > f.y;
    }
};
int a[MAXN], sol[MAXN], n, k, m;
query q[MAXN];
int urmv[MAXN], urmi[MAXN], aib[MAXN];
data d[MAXN];

void prepare()
{
    for (int i = n; i >= 1; i--) {
        if (urmv[a[i]] == 0)
            urmi[i] = n+1;
        else
            urmi[i] = urmv[a[i]];
        urmv[a[i]] = i;
    }
    for (int i = 1; i <= n; i++)
    {
        d[i].val = a[i];
        d[i].x = i;
        d[i].y = urmi[i];
    }
    sort(d+1, d+n+1, data());
    sort(q+1, q+m+1, query());
}

void add(data e)
{
    for (int i = e.x; i < MAXN; i += i&(-i))
        aib[i] += e.val;
}

int get(int dr)
{
    int to = 0;
    for (int i = dr; i > 0; i -= (i&(-i)))
        to += aib[i];
    return to;
}

int get(int st, int dr)
{
    return get(dr) - get(st-1);
}

void solve()
{
    int di = 1;
    for (int i = 1; i <= m; i++) {
        while (di <= n && d[di].y > q[i].dr) {
            add(d[di]);
            di++;
        }
        sol[q[i].ind] = get(q[i].st, q[i].dr);
    }
}

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

    scanf("%d %d %d", &n, &k, &m);
    for (int i = 1; i <= n; i++)
        scanf("%d", &a[i]);
    for (int i = 1; i <= m; i++)
    {
        scanf("%d %d", &q[i].st, &q[i].dr);
        q[i].ind = i;
    }
    prepare();
    solve();
    for (int i = 1; i <= m; i++)
        printf("%d\n", sol[i]);

    return 0;
}