結果

問題 No.2694 The Early Bird Catches The Worm
ユーザー 👑 OnjoujiTokiOnjoujiToki
提出日時 2024-03-22 22:58:11
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 66 ms / 2,000 ms
コード長 4,964 bytes
コンパイル時間 1,561 ms
コンパイル使用メモリ 133,952 KB
実行使用メモリ 11,136 KB
最終ジャッジ日時 2024-03-22 22:58:18
合計ジャッジ時間 7,579 ms
ジャッジサーバーID
(参考情報)
judge15 / judge12
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
6,676 KB
testcase_01 AC 2 ms
6,676 KB
testcase_02 AC 2 ms
6,676 KB
testcase_03 AC 2 ms
6,676 KB
testcase_04 AC 2 ms
6,676 KB
testcase_05 AC 2 ms
6,676 KB
testcase_06 AC 2 ms
6,676 KB
testcase_07 AC 2 ms
6,676 KB
testcase_08 AC 2 ms
6,676 KB
testcase_09 AC 3 ms
6,676 KB
testcase_10 AC 2 ms
6,676 KB
testcase_11 AC 3 ms
6,676 KB
testcase_12 AC 2 ms
6,676 KB
testcase_13 AC 2 ms
6,676 KB
testcase_14 AC 2 ms
6,676 KB
testcase_15 AC 2 ms
6,676 KB
testcase_16 AC 3 ms
6,676 KB
testcase_17 AC 2 ms
6,676 KB
testcase_18 AC 2 ms
6,676 KB
testcase_19 AC 2 ms
6,676 KB
testcase_20 AC 2 ms
6,676 KB
testcase_21 AC 2 ms
6,676 KB
testcase_22 AC 2 ms
6,676 KB
testcase_23 AC 2 ms
6,676 KB
testcase_24 AC 18 ms
6,676 KB
testcase_25 AC 16 ms
6,676 KB
testcase_26 AC 20 ms
6,676 KB
testcase_27 AC 28 ms
6,676 KB
testcase_28 AC 31 ms
7,168 KB
testcase_29 AC 12 ms
6,676 KB
testcase_30 AC 49 ms
9,472 KB
testcase_31 AC 29 ms
6,784 KB
testcase_32 AC 51 ms
9,728 KB
testcase_33 AC 50 ms
9,600 KB
testcase_34 AC 4 ms
6,676 KB
testcase_35 AC 26 ms
6,676 KB
testcase_36 AC 34 ms
7,424 KB
testcase_37 AC 57 ms
10,368 KB
testcase_38 AC 37 ms
7,936 KB
testcase_39 AC 10 ms
6,676 KB
testcase_40 AC 28 ms
6,784 KB
testcase_41 AC 14 ms
6,676 KB
testcase_42 AC 3 ms
6,676 KB
testcase_43 AC 6 ms
6,676 KB
testcase_44 AC 56 ms
10,368 KB
testcase_45 AC 58 ms
10,368 KB
testcase_46 AC 17 ms
6,676 KB
testcase_47 AC 19 ms
6,676 KB
testcase_48 AC 31 ms
7,168 KB
testcase_49 AC 47 ms
11,136 KB
testcase_50 AC 48 ms
11,136 KB
testcase_51 AC 47 ms
11,136 KB
testcase_52 AC 47 ms
11,136 KB
testcase_53 AC 48 ms
11,136 KB
testcase_54 AC 64 ms
11,136 KB
testcase_55 AC 65 ms
11,136 KB
testcase_56 AC 63 ms
11,136 KB
testcase_57 AC 63 ms
11,136 KB
testcase_58 AC 62 ms
11,136 KB
testcase_59 AC 63 ms
11,136 KB
testcase_60 AC 65 ms
11,136 KB
testcase_61 AC 64 ms
11,136 KB
testcase_62 AC 64 ms
11,136 KB
testcase_63 AC 65 ms
11,136 KB
testcase_64 AC 63 ms
11,136 KB
testcase_65 AC 64 ms
11,136 KB
testcase_66 AC 66 ms
11,136 KB
testcase_67 AC 65 ms
11,136 KB
testcase_68 AC 65 ms
11,136 KB
testcase_69 AC 56 ms
11,136 KB
testcase_70 AC 56 ms
11,136 KB
testcase_71 AC 56 ms
11,136 KB
testcase_72 AC 55 ms
11,136 KB
testcase_73 AC 55 ms
11,136 KB
testcase_74 AC 28 ms
7,296 KB
testcase_75 AC 56 ms
11,136 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cmath>
#include <complex>
#include <cstdint>
#include <cstring>
#include <ctime>
#include <deque>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <vector>

template <typename T1, typename T2>
std::ostream &operator<<(std::ostream &os, const std::pair<T1, T2> &p) {
  os << p.first << " " << p.second;
  return os;
}

template <typename T1, typename T2>
std::istream &operator>>(std::istream &is, std::pair<T1, T2> &p) {
  is >> p.first >> p.second;
  return is;
}

template <typename T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &v) {
  for (int i = 0; i < (int)v.size(); i++) {
    os << v[i] << (i + 1 != (int)v.size() ? " " : "");
  }
  return os;
}

template <typename T>
std::istream &operator>>(std::istream &is, std::vector<T> &v) {
  for (T &in : v) is >> in;
  return is;
}
template <int mod>
struct ModInt {
  int x;
  ModInt() : x(0) {}
  ModInt(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
  ModInt &operator+=(const ModInt &p) {
    if ((x += p.x) >= mod) x -= mod;
    return *this;
  }
  ModInt &operator-=(const ModInt &p) {
    if ((x += mod - p.x) >= mod) x -= mod;
    return *this;
  }
  ModInt &operator*=(const ModInt &p) {
    x = (int)(1LL * x * p.x % mod);
    return *this;
  }
  ModInt &operator/=(const ModInt &p) {
    *this *= p.inverse();
    return *this;
  }
  ModInt &operator^=(long long p) {  // quick_pow here:3
    ModInt res = 1;
    for (; p; p >>= 1) {
      if (p & 1) res *= *this;
      *this *= *this;
    }
    return *this = res;
  }
  ModInt operator-() const { return ModInt(-x); }
  ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }
  ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }
  ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }
  ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }
  ModInt operator^(long long p) const { return ModInt(*this) ^= p; }
  bool operator==(const ModInt &p) const { return x == p.x; }
  bool operator!=(const ModInt &p) const { return x != p.x; }
  explicit operator int() const { return x; }  // added by QCFium
  ModInt operator=(const int p) {
    x = p;
    return ModInt(*this);
  }  // added by QCFium
  ModInt inverse() const {
    int a = x, b = mod, u = 1, v = 0, t;
    while (b > 0) {
      t = a / b;
      a -= t * b;
      std::swap(a, b);
      u -= t * v;
      std::swap(u, v);
    }
    return ModInt(u);
  }
  friend std::ostream &operator<<(std::ostream &os, const ModInt<mod> &p) {
    return os << p.x;
  }
  friend std::istream &operator>>(std::istream &is, ModInt<mod> &a) {
    long long x;
    is >> x;
    a = ModInt<mod>(x);
    return (is);
  }
};
using mint = ModInt<998244353>;
const int MOD = 998244353;
template <typename T>
std::pair<std::vector<T>, std::vector<T>> get_prime_factor_with_kinds(T n) {
  std::vector<T> prime_factors;
  std::vector<T> cnt;  // number of i_th factor
  for (T i = 2; i * i <= n; i++) {
    if (n % i == 0) {
      prime_factors.push_back(i);
      cnt.push_back(0);
      while (n % i == 0) n /= i, cnt[(int)prime_factors.size() - 1]++;
    }
  }
  if (n > 1) prime_factors.push_back(n), cnt.push_back(1);
  assert(prime_factors.size() == cnt.size());
  return {prime_factors, cnt};
}
template <typename T>
std::vector<T> get_divisors(T x, bool sorted = true) {
  std::vector<T> res;
  for (T i = 1; i <= x / i; i++)
    if (x % i == 0) {
      res.push_back(i);
      if (i != x / i) res.push_back(x / i);
    }
  if (sorted) std::sort(res.begin(), res.end());
  return res;
}
void solve() {
  int n, h;
  std::cin >> n >> h;
  std::vector<long long> a(n), b(n);
  for (int i = 0; i < n; i++) {
    std::cin >> a[i];
  }
  for (int i = 0; i < n; i++) {
    std::cin >> b[i];
  }
  long long ans = 0;
  std::vector<long long> prefix(n + 1), bjj(n + 1), pa(n + 1);
  for (int i = 0; i < n; i++) {
    prefix[i + 1] = prefix[i] + b[i];
    bjj[i + 1] = bjj[i] + 1LL * b[i] * (i + 1);
    pa[i + 1] = pa[i] + a[i];
  }

  for (int i = 0; i < n; i++) {
    int r = n - 1;
    int l = i;
    auto check = [&](int mid) -> long long {
      long long sum = prefix[mid + 1] - prefix[i];

      sum += bjj[mid + 1] - bjj[i];
      sum -= 1LL * (i + 1) * (prefix[mid + 1] - prefix[i]);
      return sum;
    };

    while (l < r) {
      int mid = (l + r + 1) / 2;
      if (check(mid) <= h) {
        l = mid;
      } else {
        r = mid - 1;
      }
    }
    if (check(r) <= h) {
           ans = std::max(ans, pa[r + 1] - pa[i]);
    }
  }
  std::cout << ans << std::endl;
}

int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
  int t = 1;
  // std::cin >> t;

  while (t--) {
    solve();
  }
}
0