#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3", "unroll-loops")
#pragma GCC target("avx")
using lint = long long int;
using pint = pair<int, int>;
using plint = pair<lint, lint>;
struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((lint)(x).size())
#define POW2(n) (1LL << (n))
#define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i<i##_end_;i++)
#define IFOR(i, begin, end) for(int i=(end)-1,i##_begin_=(begin);i>=i##_begin_;i--)
#define REP(i, n) FOR(i,0,n)
#define IREP(i, n) IFOR(i,0,n)
template<typename T> void ndarray(vector<T> &vec, int len) { vec.resize(len); }
template<typename T, typename... Args> void ndarray(vector<T> &vec, int len, Args... args) { vec.resize(len); for (auto &v : vec) ndarray(v, args...); }
template<typename T> bool mmax(T &m, const T q) { if (m < q) {m = q; return true;} else return false; }
template<typename T> bool mmin(T &m, const T q) { if (m > q) {m = q; return true;} else return false; }
template<typename T1, typename T2> pair<T1, T2> operator+(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first + r.first, l.second + r.second); }
template<typename T1, typename T2> pair<T1, T2> operator-(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first - r.first, l.second - r.second); }
template<typename T> istream &operator>>(istream &is, vector<T> &vec){ for (auto &v : vec) is >> v; return is; }
///// This part below is only for debug, not used /////
template<typename T> ostream &operator<<(ostream &os, const vector<T> &vec){ os << "["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> ostream &operator<<(ostream &os, const deque<T> &vec){ os << "deq["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> ostream &operator<<(ostream &os, const set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const unordered_set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa){ os << "(" << pa.first << "," << pa.second << ")"; return os; }
template<typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
template<typename TK, typename TV> ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
#define dbg(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ") " << __FILE__ << endl;
///// END /////


vector<lint> v[1 << 19];
vector<lint> acc[1 << 19];

int N;
int head;

void merge_node(int pos)
{
    // Here, you have to calculate vvalue[pos] from children (vvalue[l], vvalue[r]),
    // Assumptions: `vdelay[pos] = vdelay[l] = vdelay[r] = zero_delay`
    int l = pos * 2 + 1, r = pos * 2 + 2;
    v[pos].insert(v[pos].end(), ALL(v[l]));
    v[pos].insert(v[pos].end(), v[r].begin(), v[r].end());
    sort(ALL(v[pos]));
    acc[pos].assign(v[pos].size() + 1, 0);
    REP(i, v[pos].size()) acc[pos][i + 1] = acc[pos][i] + v[pos][i];
}

plint calc_retval(int pos, lint query)
{
    auto itr = lower_bound(ALL(v[pos]), query);
    int i = itr - v[pos].begin();
    return make_pair(i, acc[pos][i]); // query未満の数の個数、総和
}


////// general description //////
void Init(const vector<lint> &val_init)
{
    int N_tmp = 1;
    while (N_tmp < N) N_tmp <<= 1;
    head = N_tmp - 1;
    REP(i, val_init.size())
    {
        v[head + i].push_back(val_init[i]);
        acc[head + i].push_back(0);
        acc[head + i].push_back(val_init[i]);
    }
    for (int pos = head - 1; pos >= 0; pos--)
    {
        merge_node(pos);
    }
}

plint getvalue(int begin, int end, lint query, int pos=0, int l=0, int r=-1) // Get value in [begin, end)
{
    if (r < 0) r = head + 1;
    if (begin <= l and r <= end) return calc_retval(pos, query);
    else if (begin < r and l < end) {
        plint vl = getvalue(begin, end, query, pos * 2 + 1, l, (l + r) / 2);
        plint vr = getvalue(begin, end, query, pos * 2 + 2, (l + r) / 2, r);
        return vl + vr;
    }
    else return plint(0, 0);
}

int main()
{
    int Q;
    cin >> N >> Q;
    vector<lint> A(N);
    cin >> A;
    Init(A);
    REP(_, Q)
    {
        int L, R;
        cin >> L >> R;
        L--;
        lint lo = -1e9 - 10, hi = 1e9 + 10;
        while (hi > lo + 1)
        {
            lint c = (lo + hi) / 2;
            plint p = getvalue(L, R, c);
            if (p.first <= (R - L) / 2) lo = c;
            else hi = c;
        }
        plint upper = getvalue(L, R, 1e9 + 10);
        lint q = lo;
        plint lower = getvalue(L, R, q);
        lint ret = (upper.second - lower.second) - (upper.first - lower.first) * q + lower.first * q - lower.second;
        printf("%lld\n", ret);
    }
}