結果
| 問題 | No.2039 Copy and Avoid |
| コンテスト | |
| ユーザー |
遭難者
|
| 提出日時 | 2026-01-11 20:18:01 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 905 ms / 2,000 ms |
| コード長 | 4,072 bytes |
| 記録 | |
| コンパイル時間 | 6,438 ms |
| コンパイル使用メモリ | 396,316 KB |
| 実行使用メモリ | 7,852 KB |
| 最終ジャッジ日時 | 2026-01-11 20:18:14 |
| 合計ジャッジ時間 | 11,966 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 31 |
ソースコード
#ifdef DEBUG
#include "pch.hpp"
#else
#include <bits/stdc++.h>
#if __has_include(<atcoder/all>)
#include <atcoder/all>
#endif
#endif
// #include <boost/multiprecision/cpp_int.hpp>
using namespace std;
using std::cerr, std::cin, std::cout;
#define vec vector
#if __has_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;
#define long long long
#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 (0) cerr
// #undef assert
// #define assert(...) void(0)
#undef endl
#define endl '\n'
#endif
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, typename S>
ostream &operator<<(ostream &os, pair<T, S> a) {
return os << 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--;
}
vec<long> fa(long n) {
vec<long> yakn;
long p = 1;
for (; p * p < n; p++) {
if (n % p == 0) {
yakn.push_back(p);
yakn.push_back(n / p);
}
}
if (p * p == n) yakn.push_back(p);
sort(all(yakn));
return yakn;
}
void solve() {
int n, m;
long a, b;
cin >> n >> m >> a >> b;
vec<long> c(m);
cin >> c;
unordered_map<long, vec<long>> yak;
vec<long> divs;
{
divs = fa(n);
for (long d : divs) yak[d] = fa(d);
}
constexpr long INF = 1e18;
unordered_map<long, int> idx;
idx.reserve(divs.size() * 2 + 1);
rep(i, sz(divs)) idx[divs[i]] = i;
vec<long> dp(sz(divs), INF);
dp[idx[1]] = 0;
for (long cur : divs) {
if (cur == 1) continue;
long ans = INF;
auto &cand = yak[cur];
for (long k : cand) {
if (k == cur) continue;
long sub = dp[idx[k]];
if (sub == INF) continue;
bool ok = true;
for (long cc : c) {
if (cc % k == 0 && k <= cc && cc <= cur) {
ok = false;
break;
}
}
if (!ok) continue;
chmin(ans, b + (cur / k - 1) * a + sub);
}
dp[idx[cur]] = ans;
}
long ans = dp[idx[n]];
cout << (ans == INF ? -1 : ans - b) << endl;
}
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();
}
遭難者