Problem p02538 (C++)

Buggy submission (status: Runtime Error):
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define dump(...)
#endif
#define endl '\n'
// #define int long long
#define FOR(i, a, b) for (int i = (int)(a); i < (int)(b); i++)
#define REP(i, x) for (int i = 0; i < (int)(x); i++)
#define REPS(i, x) for (int i = 1; i <= (int)(x); i++)
#define RREP(i, x) for (int i = ((int)(x)-1); i >= 0; i--)
#define RREPS(i, x) for (int i = ((int)(x)); i > 0; i--)
#define INF 2147483647
#define LLINF 9223372036854775807LL
#define ALL(a) (a).begin(), (a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define BIT(n) (1LL << (n))
#define TOUPPER(s) transform(s.begin(), s.end(), s.begin(), ::toupper)
#define TOLOWER(s) transform(s.begin(), s.end(), s.begin(), ::tolower)
#define FILLZERO(s, n)                                                         \
  do {                                                                         \
    ostringstream os;                                                          \
    os << setw(n) << setfill('0') << s;                                        \
    s = os.str();                                                              \
  } while (0);
#define UNIQUE(v)                                                              \
  v.erase(unique(v.begin(), v.end()), v.end()) // sortしてからつかうこと
#define INIT                                                                   \
  std::cin.tie(nullptr);                                                       \
  std::ios_base::sync_with_stdio(false);                                       \
  cout << std::fixed << std::setprecision(10);

using ll = long long;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using pi = pair<int, int>;
template <typename T> using Pq = priority_queue<T>;
template <typename T> using pQ = priority_queue<T, vector<T>, greater<T>>;

template <typename T> vector<T> make_vec(size_t a, T n) {
  return vector<T>(a, n);
}
template <typename T, typename... Ts> auto make_vec(size_t a, Ts... ts) {
  return vector<decltype(make_vec<T>(ts...))>(a, make_vec<T>(ts...));
}
template <class T> inline bool chmax(T &a, T b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T> inline bool chmin(T &a, T b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
template <typename T> istream &operator>>(istream &is, vector<T> &vec) {
  for (T &x : vec)
    is >> x;
  return is;
}

constexpr ll MOD = 1e9 + 7;
// constexpr ll MOD = 998244353;
int dx[8] = {1, 0, -1, 0, 1, 1, -1, -1};
int dy[8] = {0, 1, 0, -1, 1, -1, 1, -1};
ll A, B, C, D, E, F, G, H, N, M, L, K, P, Q, R, W, X, Y, Z;
string S, T;
ll ans = 0;

template <long long mod> class Fp {
private:
  long long val;

public:
  Fp() { val = 0; }
  Fp(long long v) : val(v % mod) {
    if (val < 0)
      val += mod;
  }
  Fp getVal() { return val; }
  Fp operator+=(const Fp &in) {
    val += in.val;
    if (val >= mod)
      val -= mod;
    return *this;
  }
  Fp operator+(const Fp &in) const { return Fp(*this) += in; }
  Fp &operator-=(const Fp &in) {
    val -= in.val;
    if (val < 0)
      val += mod;
    return *this;
  }
  Fp operator-(const Fp &in) const { return Fp(*this) -= in; }
  Fp &operator*=(const Fp &in) {
    val = val * in.val % mod;
    return *this;
  }
  Fp operator*(const Fp &in) const { return Fp(*this) *= in; }
  friend Fp operator*(const long long n, const Fp &in) { return in * n; }
  Fp &operator/=(const Fp &in) {
    *this *= in.modpow(mod - 2);
    return *this;
  }
  Fp operator/(const Fp &in) const { return Fp(*this) /= in; }
  bool operator==(const Fp &in) const { return val == in.val; }
  bool operator!=(const Fp &in) const { return val != in.val; }
  Fp modpow(long long n) const {
    if (n == 0)
      return 1;
    if (n & 1) {
      return (*this) * ((*this) * (*this)).modpow(n / 2);
    } else {
      return ((*this) * (*this)).modpow(n / 2);
    }
  }
  friend istream &operator>>(istream &is, Fp &fp) {
    long long res;
    is >> res;
    fp = res;
    return is;
  }
  friend ostream &operator<<(ostream &os, Fp &fp) {
    os << fp.val;
    return os;
  }
  friend ostream &operator<<(ostream &os, Fp &&fp) {
    os << fp.val;
    return os;
  }
};

// using mint = Fp<1000000007>;
using mint = Fp<998244353>;

mint modpow(const mint &in, const long long n) { return in.modpow(n); }
mint modpow(const ll a, const long long n) { return mint(a).modpow(n); }

class Factorial {
public:
  vector<mint> fact, finv;
  Factorial(long long n) : fact(n + 1, mint(1)), finv(n + 1, mint(1)) {
    for (int i = 2; i <= n; i++) {
      mint tmp(i);
      fact[i] = fact[i - 1] * tmp;
      finv[i] = finv[i - 1] / tmp;
    }
  }
  mint perm(const long long n, const long long k) {
    return fact[n] * finv[n - k];
  }
  mint com(const long long n, const long long k) {
    if (n < k || n < 0 || k < 0)
      return mint(0);
    return fact[n] * finv[k] * finv[n - k];
  }
};

template <class X, X (*fxx)(X, X), X (*iex)(), class Y, Y (*fyy)(Y, Y),
          Y (*iey)(), X (*fxy)(X, Y)>
class LazySegmentTree {
public:
  vector<X> data;
  vector<Y> lazy;
  int orgSize;
  int size;

  LazySegmentTree(int n) : orgSize(n) {
    auto v = vector<X>(n, iex());
    initialize(v);
  }

  LazySegmentTree(vector<X> &v) : orgSize((int)v.size()) { initialize(v); }

  LazySegmentTree(vector<X> &&v) : LazySegmentTree(v) {}

  void initialize(vector<X> &v) {
    size = 1;
    while (size < orgSize)
      size *= 2;
    data.resize(2 * size - 1, iex());
    lazy.resize(2 * size - 1, iey());

    for (int i = 0; i < orgSize; i++)
      data[i + size - 1] = v[i];

    for (int i = size - 2; i >= 0; i--)
      data[i] = fxx(data[i * 2 + 1], data[i * 2 + 2]);
  }

  void lazyEvaluate(int k) {
    if (lazy[k] != iey()) {
      data[k] = fxy(data[k], lazy[k]);
      if (k < size - 1) {
        lazy[k * 2 + 1] = fyy(lazy[k * 2 + 1], lazy[k]);
        lazy[k * 2 + 2] = fyy(lazy[k * 2 + 2], lazy[k]);
      }
      lazy[k] = iey();
    }
  }

  void apply(int index) { return apply(index, index + 1); }

  void apply(int a, int b, Y y, int k = 0, int l = 0, int r = -1) {
    if (r < 0)
      r = size;
    lazyEvaluate(k);
    if (b <= l || r <= a)
      return;
    if (a <= l && r <= b) {
      lazy[k] = fyy(lazy[k], y);
      lazyEvaluate(k);
    } else {
      apply(a, b, y, 2 * k + 1, l, (l + r) / 2);
      apply(a, b, y, 2 * k + 2, (l + r) / 2, r);
      data[k] = fxx(data[2 * k + 1], data[2 * k + 2]);
    }
  }

  X query(int index) { return query(index, index + 1); }

  X query(int a, int b, int k = 0, int l = 0, int r = -1) {
    if (r < 0)
      r = size;
    lazyEvaluate(k);
    // dump(a, b, l, r, k, data[k]);
    if (b <= l || r <= a)
      return iex();
    if (a <= l && r <= b)
      return data[k];
    X vl = query(a, b, 2 * k + 1, l, (l + r) / 2);
    X vr = query(a, b, 2 * k + 2, (l + r) / 2, r);
    // dump(a, b, l, r, k, data[k], vl, vr);
    return fxx(vl, vr);
  }

  void debug() {
#ifdef LOCAL
    cout << "debug : ";
    for (int i = 0; i < orgSize; i++) {
      cout << query(i) << (i != orgSize - 1 ? " " : "");
    }
    cout << endl;
#endif
  }

  void debugALL() {
#ifdef LOCAL
    cout << "--------start--------" << endl;
    for (int i = 0; i < 2 * size - 1; i++)
      lazyEvaluate(i);
    long long cnt = 1;
    for (int i = 0; i < 2 * size - 1; i++) {
      cout << data[i];
      if (i == cnt - 1) {
        cout << endl;
        cnt = cnt * 2 + 1;
      } else {
        cout << " ";
      }
    }
    cout << "---------end---------" << endl;
#endif
  }
};

// Range Minimum Query and Range Update Apply
namespace RMQRUA {
using X = int;
X iex() { return numeric_limits<X>::max(); }
X fxx(X x1, X x2) { return min(x1, x2); }
using Y = int;
Y iey() { return numeric_limits<Y>::max(); }
Y fyy(Y y1, Y y2) { return y2; }
X fxy(X x1, Y y1) { return y1; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RMQRUA

// Range Minimum Query and Range Add Apply
namespace RMQRAA {
using X = int;
X iex() { return numeric_limits<X>::max(); }
X fxx(X x1, X x2) { return min(x1, x2); }
using Y = int;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y1 + y2; }
X fxy(X x1, Y y1) {
  if (x1 == iex())
    return x1;
  return x1 + y1;
}
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RMQRAA

// Range Sum Query and Range Update Apply
namespace RSQRUA {
using X = int;
X iex() { return 0; }
X fxx(X x1, X x2) { return x1 + x2; }
using Y = int;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y2; }
X fxy(X x1, Y y1) { return y1; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RSQRUA

// Range Sum Query and Range Add Apply
namespace RSQRAA {
using X = pair<int, int>;
X iex() { return {0, 1}; }
X fxx(X x1, X x2) { return {x1.first + x2.first, x1.second + x2.second}; }
using Y = int;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y1 + y2; }
X fxy(X x1, Y y1) { return {x1.first + x1.second * y1, x1.second}; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RSQRAA
ostream &operator<<(ostream &os, RSQRAA::X x) {
  os << x.first;
  return os;
}

vector<mint> a(20010);

namespace solve {
using X = pair<mint, int>;
X iex() { return {0, 0}; }
X fxx(X x1, X x2) {
  return {x1.first * modpow(10, x2.second) + x2.first, x1.second + x2.second};
}
using Y = mint;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y2; }
X fxy(X x1, Y y1) { return {a[x1.second] * y1, x1.second}; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace solve

signed main() {
  INIT;
  REP(i, a.size()) { a[i + 1] = a[i] * 10 + 1; }
  cin >> N >> Q;
  vector<solve::X> v(N, {1, 1});
  solve::LST seg(v);
  REP(_, Q) {
    cin >> L >> R >> D;
    seg.apply(L - 1, R, D);
    cout << seg.query(0, N).first << endl;
  }
}

Fixed submission:
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define dump(...)
#endif
#define endl '\n'
// #define int long long
#define FOR(i, a, b) for (int i = (int)(a); i < (int)(b); i++)
#define REP(i, x) for (int i = 0; i < (int)(x); i++)
#define REPS(i, x) for (int i = 1; i <= (int)(x); i++)
#define RREP(i, x) for (int i = ((int)(x)-1); i >= 0; i--)
#define RREPS(i, x) for (int i = ((int)(x)); i > 0; i--)
#define INF 2147483647
#define LLINF 9223372036854775807LL
#define ALL(a) (a).begin(), (a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define BIT(n) (1LL << (n))
#define TOUPPER(s) transform(s.begin(), s.end(), s.begin(), ::toupper)
#define TOLOWER(s) transform(s.begin(), s.end(), s.begin(), ::tolower)
#define FILLZERO(s, n)                                                         \
  do {                                                                         \
    ostringstream os;                                                          \
    os << setw(n) << setfill('0') << s;                                        \
    s = os.str();                                                              \
  } while (0);
#define UNIQUE(v)                                                              \
  v.erase(unique(v.begin(), v.end()), v.end()) // sortしてからつかうこと
#define INIT                                                                   \
  std::cin.tie(nullptr);                                                       \
  std::ios_base::sync_with_stdio(false);                                       \
  cout << std::fixed << std::setprecision(10);

using ll = long long;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using pi = pair<int, int>;
template <typename T> using Pq = priority_queue<T>;
template <typename T> using pQ = priority_queue<T, vector<T>, greater<T>>;

template <typename T> vector<T> make_vec(size_t a, T n) {
  return vector<T>(a, n);
}
template <typename T, typename... Ts> auto make_vec(size_t a, Ts... ts) {
  return vector<decltype(make_vec<T>(ts...))>(a, make_vec<T>(ts...));
}
template <class T> inline bool chmax(T &a, T b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T> inline bool chmin(T &a, T b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
template <typename T> istream &operator>>(istream &is, vector<T> &vec) {
  for (T &x : vec)
    is >> x;
  return is;
}

constexpr ll MOD = 1e9 + 7;
// constexpr ll MOD = 998244353;
int dx[8] = {1, 0, -1, 0, 1, 1, -1, -1};
int dy[8] = {0, 1, 0, -1, 1, -1, 1, -1};
ll A, B, C, D, E, F, G, H, N, M, L, K, P, Q, R, W, X, Y, Z;
string S, T;
ll ans = 0;

template <long long mod> class Fp {
private:
  long long val;

public:
  Fp() { val = 0; }
  Fp(long long v) : val(v % mod) {
    if (val < 0)
      val += mod;
  }
  Fp getVal() { return val; }
  Fp operator+=(const Fp &in) {
    val += in.val;
    if (val >= mod)
      val -= mod;
    return *this;
  }
  Fp operator+(const Fp &in) const { return Fp(*this) += in; }
  Fp &operator-=(const Fp &in) {
    val -= in.val;
    if (val < 0)
      val += mod;
    return *this;
  }
  Fp operator-(const Fp &in) const { return Fp(*this) -= in; }
  Fp &operator*=(const Fp &in) {
    val = val * in.val % mod;
    return *this;
  }
  Fp operator*(const Fp &in) const { return Fp(*this) *= in; }
  friend Fp operator*(const long long n, const Fp &in) { return in * n; }
  Fp &operator/=(const Fp &in) {
    *this *= in.modpow(mod - 2);
    return *this;
  }
  Fp operator/(const Fp &in) const { return Fp(*this) /= in; }
  bool operator==(const Fp &in) const { return val == in.val; }
  bool operator!=(const Fp &in) const { return val != in.val; }
  Fp modpow(long long n) const {
    if (n == 0)
      return 1;
    if (n & 1) {
      return (*this) * ((*this) * (*this)).modpow(n / 2);
    } else {
      return ((*this) * (*this)).modpow(n / 2);
    }
  }
  friend istream &operator>>(istream &is, Fp &fp) {
    long long res;
    is >> res;
    fp = res;
    return is;
  }
  friend ostream &operator<<(ostream &os, Fp &fp) {
    os << fp.val;
    return os;
  }
  friend ostream &operator<<(ostream &os, Fp &&fp) {
    os << fp.val;
    return os;
  }
};

// using mint = Fp<1000000007>;
using mint = Fp<998244353>;

mint modpow(const mint &in, const long long n) { return in.modpow(n); }
mint modpow(const ll a, const long long n) { return mint(a).modpow(n); }

class Factorial {
public:
  vector<mint> fact, finv;
  Factorial(long long n) : fact(n + 1, mint(1)), finv(n + 1, mint(1)) {
    for (int i = 2; i <= n; i++) {
      mint tmp(i);
      fact[i] = fact[i - 1] * tmp;
      finv[i] = finv[i - 1] / tmp;
    }
  }
  mint perm(const long long n, const long long k) {
    return fact[n] * finv[n - k];
  }
  mint com(const long long n, const long long k) {
    if (n < k || n < 0 || k < 0)
      return mint(0);
    return fact[n] * finv[k] * finv[n - k];
  }
};

template <class X, X (*fxx)(X, X), X (*iex)(), class Y, Y (*fyy)(Y, Y),
          Y (*iey)(), X (*fxy)(X, Y)>
class LazySegmentTree {
public:
  vector<X> data;
  vector<Y> lazy;
  int orgSize;
  int size;

  LazySegmentTree(int n) : orgSize(n) {
    auto v = vector<X>(n, iex());
    initialize(v);
  }

  LazySegmentTree(vector<X> &v) : orgSize((int)v.size()) { initialize(v); }

  LazySegmentTree(vector<X> &&v) : LazySegmentTree(v) {}

  void initialize(vector<X> &v) {
    size = 1;
    while (size < orgSize)
      size *= 2;
    data.resize(2 * size - 1, iex());
    lazy.resize(2 * size - 1, iey());

    for (int i = 0; i < orgSize; i++)
      data[i + size - 1] = v[i];

    for (int i = size - 2; i >= 0; i--)
      data[i] = fxx(data[i * 2 + 1], data[i * 2 + 2]);
  }

  void lazyEvaluate(int k) {
    if (lazy[k] != iey()) {
      data[k] = fxy(data[k], lazy[k]);
      if (k < size - 1) {
        lazy[k * 2 + 1] = fyy(lazy[k * 2 + 1], lazy[k]);
        lazy[k * 2 + 2] = fyy(lazy[k * 2 + 2], lazy[k]);
      }
      lazy[k] = iey();
    }
  }

  void apply(int index) { return apply(index, index + 1); }

  void apply(int a, int b, Y y, int k = 0, int l = 0, int r = -1) {
    if (r < 0)
      r = size;
    lazyEvaluate(k);
    if (b <= l || r <= a)
      return;
    if (a <= l && r <= b) {
      lazy[k] = fyy(lazy[k], y);
      lazyEvaluate(k);
    } else {
      apply(a, b, y, 2 * k + 1, l, (l + r) / 2);
      apply(a, b, y, 2 * k + 2, (l + r) / 2, r);
      data[k] = fxx(data[2 * k + 1], data[2 * k + 2]);
    }
  }

  X query(int index) { return query(index, index + 1); }

  X query(int a, int b, int k = 0, int l = 0, int r = -1) {
    if (r < 0)
      r = size;
    lazyEvaluate(k);
    // dump(a, b, l, r, k, data[k]);
    if (b <= l || r <= a)
      return iex();
    if (a <= l && r <= b)
      return data[k];
    X vl = query(a, b, 2 * k + 1, l, (l + r) / 2);
    X vr = query(a, b, 2 * k + 2, (l + r) / 2, r);
    // dump(a, b, l, r, k, data[k], vl, vr);
    return fxx(vl, vr);
  }

  void debug() {
#ifdef LOCAL
    cout << "debug : ";
    for (int i = 0; i < orgSize; i++) {
      cout << query(i) << (i != orgSize - 1 ? " " : "");
    }
    cout << endl;
#endif
  }

  void debugALL() {
#ifdef LOCAL
    cout << "--------start--------" << endl;
    for (int i = 0; i < 2 * size - 1; i++)
      lazyEvaluate(i);
    long long cnt = 1;
    for (int i = 0; i < 2 * size - 1; i++) {
      cout << data[i];
      if (i == cnt - 1) {
        cout << endl;
        cnt = cnt * 2 + 1;
      } else {
        cout << " ";
      }
    }
    cout << "---------end---------" << endl;
#endif
  }
};

// Range Minimum Query and Range Update Apply
namespace RMQRUA {
using X = int;
X iex() { return numeric_limits<X>::max(); }
X fxx(X x1, X x2) { return min(x1, x2); }
using Y = int;
Y iey() { return numeric_limits<Y>::max(); }
Y fyy(Y y1, Y y2) { return y2; }
X fxy(X x1, Y y1) { return y1; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RMQRUA

// Range Minimum Query and Range Add Apply
namespace RMQRAA {
using X = int;
X iex() { return numeric_limits<X>::max(); }
X fxx(X x1, X x2) { return min(x1, x2); }
using Y = int;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y1 + y2; }
X fxy(X x1, Y y1) {
  if (x1 == iex())
    return x1;
  return x1 + y1;
}
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RMQRAA

// Range Sum Query and Range Update Apply
namespace RSQRUA {
using X = int;
X iex() { return 0; }
X fxx(X x1, X x2) { return x1 + x2; }
using Y = int;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y2; }
X fxy(X x1, Y y1) { return y1; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RSQRUA

// Range Sum Query and Range Add Apply
namespace RSQRAA {
using X = pair<int, int>;
X iex() { return {0, 1}; }
X fxx(X x1, X x2) { return {x1.first + x2.first, x1.second + x2.second}; }
using Y = int;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y1 + y2; }
X fxy(X x1, Y y1) { return {x1.first + x1.second * y1, x1.second}; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace RSQRAA
ostream &operator<<(ostream &os, RSQRAA::X x) {
  os << x.first;
  return os;
}

vector<mint> a(200100);

namespace solve {
using X = pair<mint, int>;
X iex() { return {0, 0}; }
X fxx(X x1, X x2) {
  return {x1.first * modpow(10, x2.second) + x2.first, x1.second + x2.second};
}
using Y = mint;
Y iey() { return 0; }
Y fyy(Y y1, Y y2) { return y2; }
X fxy(X x1, Y y1) { return {a[x1.second] * y1, x1.second}; }
using LST = LazySegmentTree<X, fxx, iex, Y, fyy, iey, fxy>;
} // namespace solve

signed main() {
  INIT;
  REP(i, a.size()) { a[i + 1] = a[i] * 10 + 1; }
  cin >> N >> Q;
  vector<solve::X> v(N, {1, 1});
  solve::LST seg(v);
  REP(_, Q) {
    cin >> L >> R >> D;
    seg.apply(L - 1, R, D);
    cout << seg.query(0, N).first << endl;
  }
}