Problem:
Score : 500 points

Problem Statement

You have a string S of length N.
Initially, all characters in S are 1s.

You will perform queries Q times.
In the i-th query, you are given two integers L_i, R_i and a character D_i (which is a digit).
Then, you must replace all characters from the L_i-th to the R_i-th (inclusive) with D_i.

After each query, read the string S as a decimal integer, and print its value modulo 998,244,353.

Constraints

1 \leq N, Q \leq 200,000

1 \leq L_i \leq R_i \leq N

1 \leq D_i \leq 9

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N Q
L_1 R_1 D_1
:
L_Q R_Q D_Q

Output

Print Q lines.
In the i-th line print the value of S after the i-th query, modulo 998,244,353.

Sample Input 1

8 5
3 6 2
1 4 7
3 8 3
2 2 2
4 5 1

Sample Output 1

11222211
77772211
77333333
72333333
72311333

Sample Input 2

200000 1
123 456 7

Sample Output 2

641437905

Don't forget to take the modulo.

Solution in Java (OpenJDK 11.0.6) (judge verdict: Time Limit Exceeded)

import java.util.*;

class ModIntFactory {
    private final ModArithmetic ma;
    private final int mod;

    public ModIntFactory(int mod) {
        this.ma = ModArithmetic.of(mod);
        this.mod = mod;
    }

    public ModInt create(long value) {
        if ((value %= mod) < 0) value += mod;
        if (ma instanceof ModArithmetic.ModArithmeticMontgomery) {
            return new ModInt(((ModArithmetic.ModArithmeticMontgomery) ma).generate(value));
        }
        return new ModInt((int) value);
    }

    class ModInt {
        private int value;
        private ModInt(int value) {
            this.value = value;
        }
        public int mod() {
            return mod;
        }
        public int value() {
            if (ma instanceof ModArithmetic.ModArithmeticMontgomery) {
                return ((ModArithmetic.ModArithmeticMontgomery) ma).reduce(value);
            }
            return value;
        }
        public ModInt add(ModInt mi) {
            return new ModInt(ma.add(value, mi.value));
        }
        public ModInt add(ModInt mi1, ModInt mi2) {
            return new ModInt(ma.add(value, mi1.value)).addAsg(mi2);
        }
        public ModInt add(ModInt mi1, ModInt mi2, ModInt mi3) {
            return new ModInt(ma.add(value, mi1.value)).addAsg(mi2).addAsg(mi3);
        }
        public ModInt add(ModInt mi1, ModInt mi2, ModInt mi3, ModInt mi4) {
            return new ModInt(ma.add(value, mi1.value)).addAsg(mi2).addAsg(mi3).addAsg(mi4);
        }
        public ModInt add(ModInt mi1, ModInt... mis) {
            ModInt mi = add(mi1);
            for (ModInt m : mis) mi.addAsg(m);
            return mi;
        }
        public ModInt add(long mi) {
            return new ModInt(ma.add(value, ma.remainder(mi)));
        }
        public ModInt sub(ModInt mi) {
            return new ModInt(ma.sub(value, mi.value));
        }
        public ModInt sub(long mi) {
            return new ModInt(ma.sub(value, ma.remainder(mi)));
        }
        public ModInt mul(ModInt mi) {
            return new ModInt(ma.mul(value, mi.value));
        }
        public ModInt mul(ModInt mi1, ModInt mi2) {
            return new ModInt(ma.mul(value, mi1.value)).mulAsg(mi2);
        }
        public ModInt mul(ModInt mi1, ModInt mi2, ModInt mi3) {
            return new ModInt(ma.mul(value, mi1.value)).mulAsg(mi2).mulAsg(mi3);
        }
        public ModInt mul(ModInt mi1, ModInt mi2, ModInt mi3, ModInt mi4) {
            return new ModInt(ma.mul(value, mi1.value)).mulAsg(mi2).mulAsg(mi3).mulAsg(mi4);
        }
        public ModInt mul(ModInt mi1, ModInt... mis) {
            ModInt mi = mul(mi1);
            for (ModInt m : mis) mi.mulAsg(m);
            return mi;
        }
        public ModInt mul(long mi) {
            return new ModInt(ma.mul(value, ma.remainder(mi)));
        }
        public ModInt div(ModInt mi) {
            return new ModInt(ma.div(value, mi.value));
        }
        public ModInt div(long mi) {
            return new ModInt(ma.div(value, ma.remainder(mi)));
        }
        public ModInt inv() {
            return new ModInt(ma.inv(value));
        }
        public ModInt pow(long b) {
            return new ModInt(ma.pow(value, b));
        }
        public ModInt addAsg(ModInt mi) {
            this.value = ma.add(value, mi.value);
            return this;
        }
        public ModInt addAsg(ModInt mi1, ModInt mi2) {
            return addAsg(mi1).addAsg(mi2);
        }
        public ModInt addAsg(ModInt mi1, ModInt mi2, ModInt mi3) {
            return addAsg(mi1).addAsg(mi2).addAsg(mi3);
        }
        public ModInt addAsg(ModInt mi1, ModInt mi2, ModInt mi3, ModInt mi4) {
            return addAsg(mi1).addAsg(mi2).addAsg(mi3).addAsg(mi4);
        }
        public ModInt addAsg(ModInt... mis) {
            for (ModInt m : mis) addAsg(m);
            return this;
        }
        public ModInt addAsg(long mi) {
            this.value = ma.add(value, ma.remainder(mi));
            return this;
        }
        public ModInt subAsg(ModInt mi) {
            this.value = ma.sub(value, mi.value);
            return this;
        }
        public ModInt subAsg(long mi) {
            this.value = ma.sub(value, ma.remainder(mi));
            return this;
        }
        public ModInt mulAsg(ModInt mi) {
            this.value = ma.mul(value, mi.value);
            return this;
        }
        public ModInt mulAsg(ModInt mi1, ModInt mi2) {
            return mulAsg(mi1).mulAsg(mi2);
        }
        public ModInt mulAsg(ModInt mi1, ModInt mi2, ModInt mi3) {
            return mulAsg(mi1).mulAsg(mi2).mulAsg(mi3);
        }
        public ModInt mulAsg(ModInt mi1, ModInt mi2, ModInt mi3, ModInt mi4) {
            return mulAsg(mi1).mulAsg(mi2).mulAsg(mi3).mulAsg(mi4);
        }
        public ModInt mulAsg(ModInt... mis) {
            for (ModInt m : mis) mulAsg(m);
            return this;
        }
        public ModInt mulAsg(long mi) {
            this.value = ma.mul(value, ma.remainder(mi));
            return this;
        }
        public ModInt divAsg(ModInt mi) {
            this.value = ma.div(value, mi.value);
            return this;
        }
        public ModInt divAsg(long mi) {
            this.value = ma.div(value, ma.remainder(mi));
            return this;
        }
        @Override
        public String toString() {
            return String.valueOf(value());
        }
        @Override
        public boolean equals(Object o) {
            if (o instanceof ModInt) {
                ModInt mi = (ModInt) o;
                return mod() == mi.mod() && value() == mi.value();
            }
            return false;
        }
        @Override
        public int hashCode() {
            return (1 * 37 + mod()) * 37 + value();
        }
    }

    private interface ModArithmetic {
        public int mod();
        public int remainder(long value);
        public int add(int a, int b);
        public int sub(int a, int b);
        public int mul(int a, int b);
        public default int div(int a, int b) {
            return mul(a, inv(b));
        }
        public int inv(int a);
        public int pow(int a, long b);
    
        public static ModArithmetic of(int mod) {
            if (mod <= 0) {
                throw new IllegalArgumentException();
            } else if (mod == 1) {
                return new ModArithmetic1();
            } else if (mod == 2) {
                return new ModArithmetic2();
            } else if (mod == 998244353) {
                return new ModArithmetic998244353();
            } else if (mod == 1000000007) {
                return new ModArithmetic1000000007();
            } else if ((mod & 1) == 1) {
                return new ModArithmeticMontgomery(mod);
            } else {
                return new ModArithmeticBarrett(mod);
            }
        }
    
        static final class ModArithmetic1 implements ModArithmetic {
            public int mod() {return 1;}
            public int remainder(long value) {return 0;}
            public int add(int a, int b) {return 0;}
            public int sub(int a, int b) {return 0;}
            public int mul(int a, int b) {return 0;}
            public int inv(int a) {throw new ArithmeticException("divide by zero");}
            public int pow(int a, long b) {return 0;}
        }
        static final class ModArithmetic2 implements ModArithmetic {
            public int mod() {return 2;}
            public int remainder(long value) {return (int) (value & 1);}
            public int add(int a, int b) {return a ^ b;}
            public int sub(int a, int b) {return a ^ b;}
            public int mul(int a, int b) {return a & b;}
            public int inv(int a) {
                if (a == 0) throw new ArithmeticException("divide by zero");
                return a;
            }
            public int pow(int a, long b) {
                if (b == 0) return 1;
                return a;
            }
        }
        static final class ModArithmetic998244353 implements ModArithmetic {
            private final int mod = 998244353;
            public int mod() {
                return mod;
            }
            public int remainder(long value) {
                return (int) ((value %= mod) < 0 ? value + mod : value);
            }
            public int add(int a, int b) {
                int res = a + b;
                return res >= mod ? res - mod : res;
            }
            public int sub(int a, int b) {
                int res = a - b;
                return res < 0 ? res + mod : res;
            }
            public int mul(int a, int b) {
                return (int) (((long) a * b) % mod);
            }
            public int inv(int a) {
                int b = mod;
                long u = 1, v = 0;
                while (b >= 1) {
                    long t = a / b;
                    a -= t * b;
                    int tmp1 = a; a = b; b = tmp1;
                    u -= t * v;
                    long tmp2 = u; u = v; v = tmp2;
                }
                u %= mod;
                if (a != 1) {
                    throw new ArithmeticException("divide by zero");
                }
                return (int) (u < 0 ? u + mod : u);
            }
            public int pow(int a, long b) {
                if (b < 0) throw new ArithmeticException("negative power");
                long res = 1;
                long pow2 = a;
                long idx = 1;
                while (b > 0) {
                    long lsb = b & -b;
                    for (; lsb != idx; idx <<= 1) {
                        pow2 = (pow2 * pow2) % mod;
                    }
                    res = (res * pow2) % mod;
                    b ^= lsb;
                }
                return (int) res;
            }
        }
        static final class ModArithmetic1000000007 implements ModArithmetic {
            private final int mod = 1000000007;
            public int mod() {
                return mod;
            }
            public int remainder(long value) {
                return (int) ((value %= mod) < 0 ? value + mod : value);
            }
            public int add(int a, int b) {
                int res = a + b;
                return res >= mod ? res - mod : res;
            }
            public int sub(int a, int b) {
                int res = a - b;
                return res < 0 ? res + mod : res;
            }
            public int mul(int a, int b) {
                return (int) (((long) a * b) % mod);
            }
            public int div(int a, int b) {
                return mul(a, inv(b));
            }
            public int inv(int a) {
                int b = mod;
                long u = 1, v = 0;
                while (b >= 1) {
                    long t = a / b;
                    a -= t * b;
                    int tmp1 = a; a = b; b = tmp1;
                    u -= t * v;
                    long tmp2 = u; u = v; v = tmp2;
                }
                u %= mod;
                if (a != 1) {
                    throw new ArithmeticException("divide by zero");
                }
                return (int) (u < 0 ? u + mod : u);
            }
            public int pow(int a, long b) {
                if (b < 0) throw new ArithmeticException("negative power");
                long res = 1;
                long pow2 = a;
                long idx = 1;
                while (b > 0) {
                    long lsb = b & -b;
                    for (; lsb != idx; idx <<= 1) {
                        pow2 = (pow2 * pow2) % mod;
                    }
                    res = (res * pow2) % mod;
                    b ^= lsb;
                }
                return (int) res;
            }
        }
        static final class ModArithmeticMontgomery extends ModArithmeticDynamic {
            private final long negInv;
            private final long r2, r3;
    
            private ModArithmeticMontgomery(int mod) {
                super(mod);
                long inv = 0;
                long s = 1, t = 0;
                for (int i = 0; i < 32; i++) {
                    if ((t & 1) == 0) {
                        t += mod;
                        inv += s;
                    }
                    t >>= 1;
                    s <<= 1;
                }
                long r = (1l << 32) % mod;
                this.negInv = inv;
                this.r2 = (r * r) % mod;
                this.r3 = (r2 * r) % mod;
            }
            private int generate(long x) {
                return reduce(x * r2);
            }
            private int reduce(long x) {
                x = (x + ((x * negInv) & 0xffff_ffffl) * mod) >>> 32;
                return (int) (x < mod ? x : x - mod);
            }
            @Override
            public int remainder(long value) {
                return generate((value %= mod) < 0 ? value + mod : value);
            }
            @Override
            public int mul(int a, int b) {
                return reduce((long) a * b);
            }
            @Override
            public int inv(int a) {
                a = super.inv(a);
                return reduce(a * r3);
            }
            @Override
            public int pow(int a, long b) {
                return generate(super.pow(a, b));
            }
        }
        static final class ModArithmeticBarrett extends ModArithmeticDynamic {
            private static final long mask = 0xffff_ffffl;
            private final long mh;
            private final long ml;
            private ModArithmeticBarrett(int mod) {
                super(mod);
                /**
                 * m = floor(2^64/mod)
                 * 2^64 = p*mod + q, 2^32 = a*mod + b
                 * => (a*mod + b)^2 = p*mod + q
                 * => p = mod*a^2 + 2ab + floor(b^2/mod)
                 */
                long a = (1l << 32) / mod;
                long b = (1l << 32) % mod;
                long m = a * a * mod + 2 * a * b + (b * b) / mod;
                mh = m >>> 32;
                ml = m & mask;
            }
            private int reduce(long x) {
                long z = (x & mask) * ml;
                z = (x & mask) * mh + (x >>> 32) * ml + (z >>> 32);
                z = (x >>> 32) * mh + (z >>> 32);
                x -= z * mod;
                return (int) (x < mod ? x : x - mod);
            }
            @Override
            public int remainder(long value) {
                return (int) ((value %= mod) < 0 ? value + mod : value);
            }
            @Override
            public int mul(int a, int b) {
                return reduce((long) a * b);
            }
        }
        static class ModArithmeticDynamic implements ModArithmetic {
            final int mod;
            public ModArithmeticDynamic(int mod) {
                this.mod = mod;
            }
            public int mod() {
                return mod;
            }
            public int remainder(long value) {
                return (int) ((value %= mod) < 0 ? value + mod : value);
            }
            public int add(int a, int b) {
                int sum = a + b;
                return sum >= mod ? sum - mod : sum;
            }
            public int sub(int a, int b) {
                int sum = a - b;
                return sum < 0 ? sum + mod : sum;
            }
            public int mul(int a, int b) {
                return (int) (((long) a * b) % mod);
            }
            public int inv(int a) {
                int b = mod;
                long u = 1, v = 0;
                while (b >= 1) {
                    long t = a / b;
                    a -= t * b;
                    int tmp1 = a; a = b; b = tmp1;
                    u -= t * v;
                    long tmp2 = u; u = v; v = tmp2;
                }
                u %= mod;
                if (a != 1) {
                    throw new ArithmeticException("divide by zero");
                }
                return (int) (u < 0 ? u + mod : u);
            }
            public int pow(int a, long b) {
                if (b < 0) throw new ArithmeticException("negative power");
                int res = 1;
                int pow2 = a;
                long idx = 1;
                while (b > 0) {
                    long lsb = b & -b;
                    for (; lsb != idx; idx <<= 1) {
                        pow2 = mul(pow2, pow2);
                    }
                    res = mul(res, pow2);
                    b ^= lsb;
                }
                return res;
            }
        }
    }
}

class LazySegTree<S, F> {
    final int MAX;

    final int N;
    final int Log;
    final java.util.function.BinaryOperator<S> Op;
    final S E;
    final java.util.function.BiFunction<F, S, S> Mapping;
    final java.util.function.BinaryOperator<F> Composition;
    final F Id;

    final S[] Dat;
    final F[] Laz;

    @SuppressWarnings("unchecked")
    public LazySegTree(int n, java.util.function.BinaryOperator<S> op, S e, java.util.function.BiFunction<F, S, S> mapping, java.util.function.BinaryOperator<F> composition, F id) {
        this.MAX = n;
        int k = 1;
        while (k < n) k <<= 1;
        this.N = k;
        this.Log = Integer.numberOfTrailingZeros(N);
        this.Op = op;
        this.E = e;
        this.Mapping = mapping;
        this.Composition = composition;
        this.Id = id;
        this.Dat = (S[]) new Object[N << 1];
        this.Laz = (F[]) new Object[N];
        java.util.Arrays.fill(Dat, E);
        java.util.Arrays.fill(Laz, Id);
    }

    public LazySegTree(S[] dat, java.util.function.BinaryOperator<S> op, S e, java.util.function.BiFunction<F, S, S> mapping, java.util.function.BinaryOperator<F> composition, F id) {
        this(dat.length, op, e, mapping, composition, id);
        build(dat);
    }

    private void build(S[] dat) {
        int l = dat.length;
        System.arraycopy(dat, 0, Dat, N, l);
        for (int i = N - 1; i > 0; i--) {
            Dat[i] = Op.apply(Dat[i << 1 | 0], Dat[i << 1 | 1]);
        }
    }

    private void push(int k) {
        if (Laz[k] == Id) return;
        int lk = k << 1 | 0, rk = k << 1 | 1;
        Dat[lk] = Mapping.apply(Laz[k], Dat[lk]);
        Dat[rk] = Mapping.apply(Laz[k], Dat[rk]);
        if (lk < N) Laz[lk] = Composition.apply(Laz[k], Laz[lk]);
        if (rk < N) Laz[rk] = Composition.apply(Laz[k], Laz[rk]);
        Laz[k] = Id;
    }

    private void pushTo(int k) {
        for (int i = Log; i > 0; i--) push(k >> i);
    }

    private void pushTo(int lk, int rk) {
        for (int i = Log; i > 0; i--) {
            if (((lk >> i) << i) != lk) push(lk >> i);
            if (((rk >> i) << i) != rk) push(rk >> i);
        }
    }

    private void updateFrom(int k) {
        k >>= 1;
        while (k > 0) {
            Dat[k] = Op.apply(Dat[k << 1 | 0], Dat[k << 1 | 1]);
            k >>= 1;
        }
    }

    private void updateFrom(int lk, int rk) {
        for (int i = 1; i <= Log; i++) {
            if (((lk >> i) << i) != lk) {
                int lki = lk >> i;
                Dat[lki] = Op.apply(Dat[lki << 1 | 0], Dat[lki << 1 | 1]);
            }
            if (((rk >> i) << i) != rk) {
                int rki = (rk - 1) >> i;
                Dat[rki] = Op.apply(Dat[rki << 1 | 0], Dat[rki << 1 | 1]);
            }
        }
    }

    public void set(int p, S x) {
        exclusiveRangeCheck(p);
        p += N;
        pushTo(p);
        Dat[p] = x;
        updateFrom(p);
    }

    public S get(int p) {
        exclusiveRangeCheck(p);
        p += N;
        pushTo(p);
        return Dat[p];
    }

    public S prod(int l, int r) {
        if (l > r) {
            throw new IllegalArgumentException(
                String.format("Invalid range: [%d, %d)", l, r)
            );
        }
        inclusiveRangeCheck(l);
        inclusiveRangeCheck(r);
        if (l == r) return E;
        l += N; r += N;
        pushTo(l, r);
        S sumLeft = E, sumRight = E;
        while (l < r) {
            if ((l & 1) == 1) sumLeft = Op.apply(sumLeft, Dat[l++]);
            if ((r & 1) == 1) sumRight = Op.apply(Dat[--r], sumRight);
            l >>= 1; r >>= 1;
        }
        return Op.apply(sumLeft, sumRight);
    }

    public S allProd() {
        return Dat[1];
    }

    public void apply(int p, F f) {
        exclusiveRangeCheck(p);
        p += N;
        pushTo(p);
        Dat[p] = Mapping.apply(f, Dat[p]);
        updateFrom(p);
    }

    public void apply(int l, int r, F f) {
        if (l > r) {
            throw new IllegalArgumentException(
                String.format("Invalid range: [%d, %d)", l, r)
            );
        }
        inclusiveRangeCheck(l);
        inclusiveRangeCheck(r);
        if (l == r) return;
        l += N; r += N;
        pushTo(l, r);
        for (int l2 = l, r2 = r; l2 < r2;) {
            if ((l2 & 1) == 1) {
                Dat[l2] = Mapping.apply(f, Dat[l2]);
                if (l2 < N) Laz[l2] = Composition.apply(f, Laz[l2]);
                l2++;
            }
            if ((r2 & 1) == 1) {
                r2--;
                Dat[r2] = Mapping.apply(f, Dat[r2]);
                if (r2 < N) Laz[r2] = Composition.apply(f, Laz[r2]);
            }
            l2 >>= 1; r2 >>= 1;
        }
        updateFrom(l, r);
    }

    public int maxRight(int l, java.util.function.Predicate<S> g) {
        inclusiveRangeCheck(l);
        if (!g.test(E)) {
            throw new IllegalArgumentException("Identity element must satisfy the condition.");
        }
        if (l == MAX) return MAX;
        l += N;
        pushTo(l);
        S sum = E;
        do {
            l >>= Integer.numberOfTrailingZeros(l);
            if (!g.test(Op.apply(sum, Dat[l]))) {
                while (l < N) {
                    push(l);
                    l = l << 1;
                    if (g.test(Op.apply(sum, Dat[l]))) {
                        sum = Op.apply(sum, Dat[l]);
                        l++;
                    }
                }
                return l - N;
            }
            sum = Op.apply(sum, Dat[l]);
            l++;
        } while ((l & -l) != l);
        return MAX;
    }

    public int minLeft(int r, java.util.function.Predicate<S> g) {
        inclusiveRangeCheck(r);
        if (!g.test(E)) {
            throw new IllegalArgumentException("Identity element must satisfy the condition.");
        }
        if (r == 0) return 0;
        r += N;
        pushTo(r - 1);
        S sum = E;
        do {
            r--;
            while (r > 1 && (r & 1) == 1) r >>= 1;
            if (!g.test(Op.apply(Dat[r], sum))) {
                while (r < N) {
                    push(r);
                    r = r << 1 | 1;
                    if (g.test(Op.apply(Dat[r], sum))) {
                        sum = Op.apply(Dat[r], sum);
                        r--;
                    }
                }
                return r + 1 - N;
            }
            sum = Op.apply(Dat[r], sum);
        } while ((r & -r) != r);
        return 0;
    }

    private void exclusiveRangeCheck(int p) {
        if (p < 0 || p >= MAX) {
            throw new IndexOutOfBoundsException(
                String.format("Index %d is not in [%d, %d).", p, 0, MAX)
            );
        }
    }

    private void inclusiveRangeCheck(int p) {
        if (p < 0 || p > MAX) {
            throw new IndexOutOfBoundsException(
                String.format("Index %d is not in [%d, %d].", p, 0, MAX)
            );
        }
    }

    // **************** DEBUG **************** //

    private int indent = 6;

    public void setIndent(int newIndent) {
        this.indent = newIndent;
    }

    @Override
    public String toString() {
        return toSimpleString();
    }

    private S[] simulatePushAll() {
        S[] simDat = java.util.Arrays.copyOf(Dat, 2 * N);
        F[] simLaz = java.util.Arrays.copyOf(Laz, 2 * N);
        for (int k = 1; k < N; k++) {
            if (simLaz[k] == Id) continue;
            int lk = k << 1 | 0, rk = k << 1 | 1;
            simDat[lk] = Mapping.apply(simLaz[k], simDat[lk]);
            simDat[rk] = Mapping.apply(simLaz[k], simDat[rk]);
            if (lk < N) simLaz[lk] = Composition.apply(simLaz[k], simLaz[lk]);
            if (rk < N) simLaz[rk] = Composition.apply(simLaz[k], simLaz[rk]);
            simLaz[k] = Id;
        }
        return simDat;
    }

    public String toDetailedString() {
        return toDetailedString(1, 0, simulatePushAll());
    }

    private String toDetailedString(int k, int sp, S[] dat) {
        if (k >= N) return indent(sp) + dat[k];
        String s = "";
        s += toDetailedString(k << 1 | 1, sp + indent, dat);
        s += "\n";
        s += indent(sp) + dat[k];
        s += "\n";
        s += toDetailedString(k << 1 | 0, sp + indent, dat);
        return s;
    }

    private static String indent(int n) {
        StringBuilder sb = new StringBuilder();
        while (n --> 0) sb.append(' ');
        return sb.toString();
    }

    public String toSimpleString() {
        S[] dat = simulatePushAll();
        StringBuilder sb = new StringBuilder();
        sb.append('[');
        for (int i = 0; i < N; i++) {
            sb.append(dat[i + N]);
            if (i < N - 1) sb.append(',').append(' ');
        }
        sb.append(']');
        return sb.toString();
    }
}

class MathLib{
    private static long safe_mod(long x, long m){
        x %= m;
        if(x<0) x += m;
        return x;
    }

    private static long[] inv_gcd(long a, long b){
        a = safe_mod(a, b);
        if(a==0) return new long[]{b,0};

        long s=b, t=a;
        long m0=0, m1=1;
        while(t>0){
            long u = s/t;
            s -= t*u;
            m0 -= m1*u;
            long tmp = s; s = t; t = tmp;
            tmp = m0; m0 = m1; m1 = tmp;
        }
        if(m0<0) m0 += b/s;
        return new long[]{s,m0};
    }

    public static long pow_mod(long x, long n, int m){
        assert n >= 0;
        assert m >= 1;
        if(m == 1)return 0L;
        x = safe_mod(x, m);
        long ans = 1L;
        while(n > 0){
            if((n&1) == 1) ans = (ans * x) % m;
            x = (x*x) % m;
            n >>>= 1;
        }
        return ans;
    }

    public static long[] crt(long[] r, long[] m){
        assert(r.length == m.length);
        int n = r.length;

        long r0=0, m0=1;
        for(int i=0; i<n; i++){
            assert(1 <= m[i]);
            long r1 = safe_mod(r[i], m[i]), m1 = m[i];
            if(m0 < m1){
                long tmp = r0; r0 = r1; r1 = tmp;
                tmp = m0; m0 = m1; m1 = tmp;
            }
            if(m0%m1 == 0){
                if(r0%m1 != r1) return new long[]{0,0};
                continue;
            }

            long[] ig = inv_gcd(m0, m1);
            long g = ig[0], im = ig[1];

            long u1 = m1/g;
            if((r1-r0)%g != 0) return new long[]{0,0};

            long x = (r1-r0) / g % u1 * im % u1;

            r0 += x * m0;
            m0 *= u1;
            if(r0<0) r0 += m0;
            //System.err.printf("%d %d\n", r0, m0);
        } 
        return new long[]{r0, m0};
    }
    public static long floor_sum(long n, long m, long a, long b){
        long ans = 0;
        if(a >= m){
            ans += (n-1) * n * (a/m) / 2;
            a %= m;
        }
        if(b >= m){
            ans += n * (b/m);
            b %= m;
        }

        long y_max = (a*n+b) / m;
        long x_max = y_max * m - b;
        if(y_max == 0) return ans;
        ans += (n - (x_max+a-1)/a) * y_max;
        ans += floor_sum(y_max, a, m, (a-x_max%a)%a);
        return ans;
    }
}


class S{
    ModIntFactory.ModInt val;
    int digits;
    public S(ModIntFactory.ModInt val, int digits){
        this.val = val;
        this.digits = digits;
    }
    static S connect(S a, S b){
        return new S(a.val.mul(MathLib.pow_mod(10, b.digits, a.val.mod())).add(b.val),
                     a.digits + b.digits);
    }
    static S id(){
        return new S(new ModIntFactory(998244353).create(0),0);
    }
    public String toString(){
        return "["+val+"/"+digits+"]";
    }
}

class F{
    int d;
    public F(int d){
        this.d = d;
    }
    S map(S a){
        if(d==0) return a;
        ModIntFactory.ModInt dm = a.val.sub(a.val).add(d);
        return new S(dm.mul(MathLib.pow_mod(10, a.digits, 998244353)).sub(dm).div(9), a.digits);
         //1111 = (10^4-1)/9
    }
    static F comp(F f, F g){
        if(f.d==0)return g;
        else return f;
    }
}

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int Q = sc.nextInt();

        S[] initial = new S[N];
        Arrays.fill(initial, new S(new ModIntFactory(998244353).create(1),1));
        LazySegTree<S,F> seg = new LazySegTree<>(initial, S::connect, S.id(), (f,s)->f.map(s), F::comp, new F(0));
        for(int q=0; q<Q; q++){
            int L = sc.nextInt()-1;
            int R = sc.nextInt();
            int D = sc.nextInt();
            seg.apply(L,R, new F(D));
            System.out.println(seg.allProd().val);
        }
    }
}