#include <bits/stdc++.h>
using namespace std;

template <int mod>
struct NumberTheoreticTransform {

    vector<int> rev, rts;
    int base, max_base, root;

    NumberTheoreticTransform() : base(1), rev{0, 1}, rts{0, 1} {
        assert(mod >= 3 && mod % 2 == 1);
        auto tmp = mod - 1;
        max_base = 0;
        while (tmp % 2 == 0) tmp >>= 1, max_base++;
        root = 2;
        while (mod_pow(root, (mod - 1) >> 1) == 1) ++root;
        assert(mod_pow(root, mod - 1) == 1);
        root = mod_pow(root, (mod - 1) >> max_base);
    }

    inline int mod_pow(int x, int n) {
        int ret = 1;
        while (n > 0) {
            if (n & 1) ret = mul(ret, x);
            x = mul(x, x);
            n >>= 1;
        }
        return ret;
    }

    inline int inverse(int x) {
        return mod_pow(x, mod - 2);
    }

    inline unsigned add(unsigned x, unsigned y) {
        x += y;
        if (x >= mod) x -= mod;
        return x;
    }

    inline unsigned mul(unsigned a, unsigned b) {
        return 1ull * a * b % (unsigned long long)mod;
    }

    void ensure_base(int nbase) {
        if (nbase <= base) return;
        rev.resize(1 << nbase);
        rts.resize(1 << nbase);
        for (int i = 0; i < (1 << nbase); i++) {
            rev[i] = (rev[i >> 1] >> 1) + ((i & 1) << (nbase - 1));
        }
        assert(nbase <= max_base);
        while (base < nbase) {
            int z = mod_pow(root, 1 << (max_base - 1 - base));
            for (int i = 1 << (base - 1); i < (1 << base); i++) {
                rts[i << 1] = rts[i];
                rts[(i << 1) + 1] = mul(rts[i], z);
            }
            ++base;
        }
    }

    void ntt(vector<int> &a) {
        const int n = (int)a.size();
        assert((n & (n - 1)) == 0);
        int zeros = __builtin_ctz(n);
        ensure_base(zeros);
        int shift = base - zeros;
        for (int i = 0; i < n; i++) {
            if (i < (rev[i] >> shift)) {
                swap(a[i], a[rev[i] >> shift]);
            }
        }
        for (int k = 1; k < n; k <<= 1) {
            for (int i = 0; i < n; i += 2 * k) {
                for (int j = 0; j < k; j++) {
                    int z = mul(a[i + j + k], rts[j + k]);
                    a[i + j + k] = add(a[i + j], mod - z);
                    a[i + j] = add(a[i + j], z);
                }
            }
        }
    }

    vector<int> multiply(vector<int> a, vector<int> b) {
        int need = a.size() + b.size() - 1;
        int nbase = 1;
        while ((1 << nbase) < need) nbase++;
        ensure_base(nbase);
        int sz = 1 << nbase;
        a.resize(sz, 0);
        b.resize(sz, 0);
        ntt(a);
        ntt(b);
        int inv_sz = inverse(sz);
        for (int i = 0; i < sz; i++) {
            a[i] = mul(a[i], mul(b[i], inv_sz));
        }
        reverse(a.begin() + 1, a.end());
        ntt(a);
        a.resize(need);
        return a;
    }
};

int main() {
    int n, m;
    cin >> n >> m;
    vector<int> a(n), b(m);
    for (auto &x : a) cin >> x;
    for (auto &x : b) cin >> x;

    NumberTheoreticTransform<998244353> ntt;
    vector<int> c = ntt.multiply(a, b);
    for (auto x : c) cout << x << ' ';
    cout << '\n';
}

Measured memory_bytes: 27260