#include <bits/stdc++.h>

#include <atcoder/all>
using namespace std;

#define lli long long int
#define REP(i, s, n) for (lli i = s; i < n; i++)
#define INF (1LL << 62)
#define DEBUG 0
#define mp(a, b) make_pair(a, b)
#define SORT(V) sort(V.begin(), V.end())
#define PI (3.141592653589794)
#define TO_STRING(VariableName) #VariableName
#define LOG1(x) \
    if (DEBUG) cout << TO_STRING(x) << "=" << x << " " << endl;
#define LOG2(x, y)                                                          \
    if (DEBUG)                                                              \
        cout << TO_STRING(x) << "=" << x << " " << TO_STRING(y) << "=" << y \
             << endl;
#define LOG3(x, y, z)                                                       \
    if (DEBUG)                                                              \
        cout << TO_STRING(x) << "=" << x << " " << TO_STRING(y) << "=" << y \
             << " " << TO_STRING(z) << "=" << z << endl;
#define LOG4(w, x, y, z)                                                      \
    if (DEBUG)                                                                \
        cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x   \
             << " " << TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" \
             << z << endl;
#define LOG5(w, x, y, z, a)                                                   \
    if (DEBUG)                                                                \
        cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x   \
             << " " << TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" \
             << z << " " << TO_STRING(a) << "=" << a << endl;
#define LOG6(w, x, y, z, a, b)                                                \
    if (DEBUG)                                                                \
        cout << TO_STRING(w) << "=" << w << " " << TO_STRING(x) << "=" << x   \
             << " " << TO_STRING(y) << "=" << y << " " << TO_STRING(z) << "=" \
             << z << " " << TO_STRING(a) << "=" << a << " " << TO_STRING(b)   \
             << "=" << b << endl;

#define overload6(a, b, c, d, e, f, g, ...) g
#define LOG(...) \
    overload6(__VA_ARGS__, LOG6, LOG5, LOG4, LOG3, LOG2, LOG1)(__VA_ARGS__)

template <class T>
bool chmax(T& a, const T& b) {
    if (a < b) {
        a = b;
        return 1;
    }
    return 0;
}
template <class T>
bool chmin(T& a, const T& b) {
    if (b < a) {
        a = b;
        return 1;
    }
    return 0;
}

mt19937 engine;
std::chrono::system_clock::time_point start, endTime;

std::ostream& operator<<(std::ostream& dest, __int128_t value) {
    std::ostream::sentry s(dest);
    if (s) {
        __uint128_t tmp = value < 0 ? -value : value;
        char buffer[128];
        char* d = std::end(buffer);
        do {
            --d;
            *d = "0123456789"[tmp % 10];
            tmp /= 10;
        } while (tmp != 0);
        if (value < 0) {
            --d;
            *d = '-';
        }
        int len = std::end(buffer) - d;
        if (dest.rdbuf()->sputn(d, len) != len) {
            dest.setstate(std::ios_base::badbit);
        }
    }
    return dest;
}

__int128 parse(string& s) {
    __int128 ret = 0;
    for (int i = 0; i < s.length(); i++) {
        if ('0' <= s[i] && s[i] <= '9') {
            ret = 10 * ret + s[i] - '0';
        }
    }
    return ret;
}
const int mod = 998244353;
class mint {
    long long x;

   public:
    mint(long long x = 0) : x((x % mod + mod) % mod) {}
    mint operator-() const { return mint(-x); }
    mint& operator+=(const mint& a) {
        if ((x += a.x) >= mod) x -= mod;
        return *this;
    }
    mint& operator-=(const mint& a) {
        if ((x += mod - a.x) >= mod) x -= mod;
        return *this;
    }
    mint& operator*=(const mint& a) {
        (x *= a.x) %= mod;
        return *this;
    }
    mint operator+(const mint& a) const {
        mint res(*this);
        return res += a;
    }
    mint operator-(const mint& a) const {
        mint res(*this);
        return res -= a;
    }
    mint operator*(const mint& a) const {
        mint res(*this);
        return res *= a;
    }
    mint pow(lli t) const {
        if (!t) return 1;
        mint a = pow(t >> 1);
        a *= a;
        if (t & 1) a *= *this;
        return a;
    }
    // for prime mod
    mint inv() const { return pow(mod - 2); }
    mint& operator/=(const mint& a) { return (*this) *= a.inv(); }
    mint operator/(const mint& a) const {
        mint res(*this);
        return res /= a;
    }

    friend ostream& operator<<(ostream& os, const mint& m) {
        os << m.x;
        return os;
    }
};

mint sum[200100];

void solve() {
    lli N, M, Q;
    cin >> N >> M >> Q;

    vector<lli> A(N);
    REP(i, 0, N) cin >> A[i];

    mint base = M;
    base = base.pow(N - 1);
    REP(i, 0, N) {
        sum[i + 1] = sum[i] + base * (A[i] - 1);
        base /= M;
    }

    while (Q--) {
        lli l, r;
        cin >> l >> r;
        l--;
        mint ans = (sum[r] - sum[l]);
        LOG(sum[r], sum[l]);
        mint base = M;
        base = base.pow(N - r);
        LOG(ans, base);
        ans /= base;
        cout << ans + 1 << endl;
    }
}

// Generated by 2.12.0 https://github.com/kyuridenamida/atcoder-tools  (tips:
// You use the default template now. You can remove this line by using your
// custom template)
int main() {
    lli n = 1;
    // cin >> n;
    while (n--) solve();
    return 0;
}