結果

問題 No.2694 The Early Bird Catches The Worm
ユーザー MisukiMisuki
提出日時 2024-03-22 21:40:39
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 44 ms / 2,000 ms
コード長 3,445 bytes
コンパイル時間 2,261 ms
コンパイル使用メモリ 199,936 KB
実行使用メモリ 9,600 KB
最終ジャッジ日時 2024-09-30 11:08:35
合計ジャッジ時間 6,286 ms
ジャッジサーバーID
(参考情報)
judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 72
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 #
プレゼンテーションモードにする

#pragma GCC optimize("O2")
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cctype>
#include <cfenv>
#include <cfloat>
#include <chrono>
#include <cinttypes>
#include <climits>
#include <cmath>
#include <complex>
#include <cstdarg>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <fstream>
#include <functional>
#include <initializer_list>
#include <iomanip>
#include <ios>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <streambuf>
#include <string>
#include <tuple>
#include <type_traits>
#include <variant>
#if __cplusplus >= 202002L
#include <bit>
#include <compare>
#include <concepts>
#include <numbers>
#include <ranges>
#include <span>
#else
#define ssize(v) (int)(v).size()
#define popcount(x) __builtin_popcountll(x)
constexpr int bit_width(const unsigned int x) { return x == 0 ? 0 : ((sizeof(unsigned int) * CHAR_BIT) - __builtin_clz(x)); }
constexpr int bit_width(const unsigned long long x) { return x == 0 ? 0 : ((sizeof(unsigned long long) * CHAR_BIT) - __builtin_clzll(x)); }
constexpr int countr_zero(const unsigned int x) { return x == 0 ? sizeof(unsigned int) * CHAR_BIT : __builtin_ctz(x); }
constexpr int countr_zero(const unsigned long long x) { return x == 0 ? sizeof(unsigned long long) * CHAR_BIT : __builtin_ctzll(x); }
constexpr unsigned int bit_ceil(const unsigned int x) { return x == 0 ? 1 : (popcount(x) == 1 ? x : (1u << bit_width(x))); }
constexpr unsigned long long bit_ceil(const unsigned long long x) { return x == 0 ? 1 : (popcount(x) == 1 ? x : (1ull << bit_width(x))); }
#endif
#define int ll
#define INT128_MAX (__int128)(((unsigned __int128) 1 << ((sizeof(__int128) * __CHAR_BIT__) - 1)) - 1)
#define INT128_MIN (-INT128_MAX - 1)
#define clock chrono::steady_clock::now().time_since_epoch().count()
#ifdef DEBUG
#define dbg(x) cout << (#x) << " = " << x << '\n'
#else
#define dbg(x)
#endif
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ldb = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
//#define double ldb
template<class T>
ostream& operator<<(ostream& os, const pair<T, T> pr) {
return os << pr.first << ' ' << pr.second;
}
template<class T, size_t N>
ostream& operator<<(ostream& os, const array<T, N> &arr) {
for(const T &X : arr)
os << X << ' ';
return os;
}
template<class T>
ostream& operator<<(ostream& os, const vector<T> &vec) {
for(const T &X : vec)
os << X << ' ';
return os;
}
template<class T>
ostream& operator<<(ostream& os, const set<T> &s) {
for(const T &x : s)
os << x << ' ';
return os;
}
signed main() {
ios::sync_with_stdio(false), cin.tie(NULL);
int n, h; cin >> n >> h;
vector<int> a(n), b(n);
for(int &x : a)
cin >> x;
for(int &x : b)
cin >> x;
vector<int> as(n + 1), bs(n + 1);
for(int i = n - 1; i >= 0; i--)
as[i] = as[i + 1] + a[i], bs[i] = bs[i + 1] + b[i];
int ans = 0;
for(int l = n - 1, r = n - 1, sum = 0; l >= 0; l--) {
sum += bs[l] - bs[r + 1];
while(sum > h) {
sum -= (r - l + 1) * b[r];
r--;
}
ans = max(ans, as[l] - as[r + 1]);
}
cout << ans << '\n';
return 0;
}
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