#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

#include <bits/stdc++.h>
//#include <atcoder/all>

using namespace std;
//using namespace atcoder;

#define ll long long int

constexpr double time_limit = 4.8;

struct Input {
    int n, q, wt, st;
    vector<ll> w;
    vector<pair<int,int>> lr;

    void input() {
        cin >> n >> q >> wt >> st;
        w.resize(n);
        for (int i = 0; i < n; ++i) {
            cin >> w[i];
        }
        lr.resize(q);
        for (int i = 0; i < q; ++i) {
            int l, r;
            cin >> l >> r;
            lr[i] = {l - 1, r - 1};
        }
    }
};

struct Solver {
    int n, q, wt, st;
    vector<ll> w;
    vector<pair<int,int>> lr;
    vector<ll> cs; // cumulative sum of w
    vector<int> p;
    ll cost;

    Solver(const Input& input) {
        n = input.n;
        q = input.q;
        wt = input.wt;
        st = input.st;
        w = input.w;
        lr = input.lr;

        // initialize cs
        cs.resize(n + 1, 0);
        for (int i = 0; i < n; ++i) {
            cs[i + 1] = cs[i] + w[i];
        }
    }

    void mo() {
        int sqrt_n = (int)sqrt(n) + 1;
        vector<vector<pair<int,int>>> groups(sqrt_n + 1);
        for (int i = 0; i < q; ++i) {
            auto [l, r] = lr[i];
            groups[sqrt_n * cs[l] / cs.back()].push_back({r, i});
        }
        bool flag = false;
        for (vector<pair<int,int>>& group : groups) {
            if (group.empty()) {
                continue;
            }
            sort(group.begin(), group.end());
            if (flag) {
                reverse(group.begin(), group.end());
            }
            for (auto [_, i] : group) {
                p.push_back(i);
            }
            flag ^= true;
        }
    }

    ll get_cost(int i, int j) {
        auto [a, b] = lr[i];
        auto [c, d] = lr[j];
        return cs[max(a, c)] - cs[min(a, c)] + cs[max(b, d) + 1] - cs[min(b, d) + 1];
    }

    void initialize_cost() {
        cost = 0;
        for (int i = 0; i < q - 1; ++i) {
            cost += get_cost(p[i], p[i + 1]);
        }
    }

    ll reverse_delta(int i, int j) {
        ll delta = 0;
        delta -= get_cost(p[i - 1], p[i]);
        delta -= get_cost(p[j], p[j + 1]);
        delta += get_cost(p[i - 1], p[j]);
        delta += get_cost(p[i], p[j + 1]);
        return delta;
    }

    void reverse_nodes(int i, int j, ll delta) {
        reverse(p.begin() + i, p.begin() + j + 1);
        cost += delta;
    }

    void improve() {
        int cnt = 10;
        while (cnt--) {
            for (int i = 1; i < q - 2; ++i) {
                ll delta = reverse_delta(i, i + 1);
                if (delta <= 0) {
                    reverse_nodes(i, i + 1, delta);
                }
            }
        }
    }

    void print() {
        for (int i = 0; i < q; ++i) {
            cout << p[i] + 1;
            if (i == q - 1) {
                cout << "\n";
            } else {
                cout << " ";
            }
        }
    }
};

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    Input input;
    input.input();

    Solver solver(input);
    solver.mo();
    solver.initialize_cost();
    solver.improve();
    solver.print();

    return 0;
}