結果
| 問題 | No.3537 Thank You! |
| コンテスト | |
| ユーザー |
遭難者
|
| 提出日時 | 2026-05-08 21:36:20 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 24 ms / 2,000 ms |
| コード長 | 4,585 bytes |
| 記録 | |
| コンパイル時間 | 4,634 ms |
| コンパイル使用メモリ | 381,804 KB |
| 実行使用メモリ | 6,656 KB |
| 最終ジャッジ日時 | 2026-05-08 21:36:33 |
| 合計ジャッジ時間 | 6,745 ms |
|
ジャッジサーバーID (参考情報) |
judge1_1 / judge3_0 |
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| サブタスク | 配点 | 結果 |
|---|---|---|
| サブタスク1 | 30 % | AC * 21 |
| サブタスク2 | 70 % | AC * 15 |
| 合計 | 2.5 * 100% = 250 点 |
ソースコード
#include <bits/stdc++.h>
// #include <boost/multiprecision/cpp_int.hpp>
using namespace std;
using std::cerr, std::cin, std::cout;
#define vec vector
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using mint = atcoder::modint998244353;
std::istream &operator>>(std::istream &is, mint &a) {
long long t;
is >> t;
a = t;
return is;
}
std::ostream &operator<<(std::ostream &os, mint a) { return os << a.val(); }
// vec<mint> operator*(const vec<mint> &a, const vec<mint> &b) { return a.empty() || b.empty() ? vec<mint>() : atcoder::convolution(a, b); }
// vec<mint> &operator*=(vec<mint> &a, const vec<mint> &b) { return a = a * b; }
#endif
typedef long double ld;
#if LONG_MAX == 2147483647L
#undef long
#define long long long
#endif
#define uint unsigned int
#define ulong unsigned long
#define overload3(a, b, c, name, ...) name
#define rep3(i, a, b) for (int i = (a); i < (b); i++)
#define rep2(i, n) rep3(i, 0, n)
#define rep1(n) rep2(__i, n)
#define rep(...) overload3(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__)
#define per3(i, a, b) for (int i = (b) - 1; i >= (a); i--)
#define per2(i, n) per3(i, 0, n)
#define per1(n) per2(__i, n)
#define per(...) overload3(__VA_ARGS__, per3, per2, per1)(__VA_ARGS__)
#define all(a) a.begin(), a.end()
#define UNIQUE(a) sort(all(a)), a.erase(unique(all(a)), a.end()), a.shrink_to_fit()
#define sz(a) static_cast<int>(a.size())
#ifndef DEBUG
#define cerr \
if (false) cerr
// #undef assert
// #define assert(...) void(0)
#undef endl
#define endl '\n'
#endif
ostream &operator<<(ostream &os, __int128_t value) {
ostream::sentry s(os);
if (s) {
__uint128_t tmp = value < 0 ? -value : value;
char buffer[128];
char *d = std::end(buffer);
do {
--d;
*d = "0123456789"[tmp % 10];
tmp /= 10;
} while (tmp != 0);
if (value < 0) --d, *d = '-';
const int len = std::end(buffer) - d;
if (os.rdbuf()->sputn(d, len) != len) os.setstate(std::ios_base::badbit);
}
return os;
}
template <typename T, typename S>
ostream &operator<<(ostream &os, pair<T, S> a) {
return os << a.first << ' ' << a.second;
};
template <typename T>
ostream &operator<<(ostream &os, vector<T> a) {
const int n = a.size();
rep(i, n) {
os << a[i];
if (i + 1 != n) os << " ";
}
return os;
}
template <typename T, typename S>
istream &operator>>(istream &is, pair<T, S> &a) {
return is >> a.first >> a.second;
}
template <typename T, size_t n>
ostream &operator<<(ostream &os, array<T, n> a) {
rep(i, n) {
os << a[i];
if (i + 1 != n) os << " ";
}
return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &a) {
for (T &i : a) is >> i;
return is;
}
template <typename T, typename S>
bool chmin(T &x, S y) {
if ((T)y < x) {
x = (T)y;
return true;
}
return false;
}
template <typename T, typename S>
bool chmax(T &x, S y) {
if (x < (T)y) {
x = (T)y;
return true;
}
return false;
}
template <typename T>
void operator++(vector<T> &a) {
for (T &i : a) ++i;
}
template <typename T>
void operator--(vector<T> &a) {
for (T &i : a) --i;
}
template <typename T>
void operator++(vector<T> &a, int) {
for (T &i : a) i++;
}
template <typename T>
void operator--(vector<T> &a, int) {
for (T &i : a) i--;
}
void solve();
int main() {
// srand((unsigned)time(NULL));
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(20);
int t = 1;
// cin >> t;
while (t--) solve();
}
void solve() {
int n;
long b;
cin >> n >> b;
vec<pair<long, long>> a(n);
rep(i, n) cin >> a[i].first;
rep(i, n) {
cin >> a[i].second;
if (a[i].second >= b) {
cout << b << endl;
return;
}
}
sort(all(a));
vec<long> s(n + 1), c(n + 1);
rep(i, n) {
s[i + 1] = s[i] + a[i].first * a[i].second;
c[i + 1] = c[i] + a[i].second;
}
long ans = 0;
rep(st, n) {
long y = b - s[st];
if (y < 0) break;
long res = c[st];
res += a[st].second;
y -= a[st].second;
if (y < 0) {
res += y;
y = 0;
}
if (y == 0) continue;
chmax(ans, res);
}
rep(st, n) {
int ok = -1, ng = n;
const long bb = b - a[st].second;
auto fs = [&](int vs) { return s[vs + 1] - (vs >= st ? a[st].first * a[st].second : 0); };
auto fc = [&](int vs) { return c[vs + 1] - (vs >= st ? a[st].second : 0); };
while (ng - ok != 1) {
const int vs = (ng + ok) / 2;
long cost = fs(vs);
if (cost <= bb) ok = vs;
else ng = vs;
}
long noko = bb - fs(ok);
assert(noko >= 0);
long res = fc(ok) + a[st].second;
if (ok == n - 1) {
chmax(ans, res);
continue;
}
long ss = ok + 1 == st ? 1 : a[ok + 1].first;
res += noko / ss;
chmax(ans, res);
}
cout << ans << endl;
}
遭難者