結果
問題 | No.1396 Giri |
ユーザー | commy |
提出日時 | 2021-02-14 22:22:40 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,211 ms / 2,000 ms |
コード長 | 4,590 bytes |
コンパイル時間 | 1,063 ms |
コンパイル使用メモリ | 99,356 KB |
実行使用メモリ | 91,048 KB |
最終ジャッジ日時 | 2024-07-22 10:07:10 |
合計ジャッジ時間 | 11,462 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1,211 ms
91,044 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 1,205 ms
91,036 KB |
testcase_06 | AC | 1 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 1 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 1 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | AC | 1 ms
6,940 KB |
testcase_16 | AC | 3 ms
6,940 KB |
testcase_17 | AC | 10 ms
6,940 KB |
testcase_18 | AC | 73 ms
9,984 KB |
testcase_19 | AC | 565 ms
48,844 KB |
testcase_20 | AC | 804 ms
66,212 KB |
testcase_21 | AC | 1,030 ms
82,232 KB |
testcase_22 | AC | 1,195 ms
89,936 KB |
testcase_23 | AC | 1,152 ms
91,004 KB |
testcase_24 | AC | 1,175 ms
91,048 KB |
testcase_25 | AC | 1,153 ms
91,040 KB |
ソースコード
#include <iostream> #include <vector> #include <algorithm> #include <string> #include <numeric> #include <utility> #include <tuple> #define rep(i, a, b) for (int i = int(a); i < int(b); i++) using namespace std; using ll = long long int; using P = pair<int, int>; // clang-format off #ifdef _DEBUG_ #define dump(...) do{ cerr << __LINE__ << ":\t" << #__VA_ARGS__ << " = "; PPPPP(__VA_ARGS__); cerr << endl; } while(false) template<typename T> void PPPPP(T t) { cerr << t; } template<typename T, typename... S> void PPPPP(T t, S... s) { cerr << t << ", "; PPPPP(s...); } #else #define dump(...) do{ } while(false) #endif template<typename T> vector<T> make_v(size_t a, T b) { return vector<T>(a, b); } template<typename... Ts> auto make_v(size_t a, Ts... ts) { return vector<decltype(make_v(ts...))>(a, make_v(ts...)); } template<typename T> bool chmin(T &a, T b) { if (a > b) {a = b; return true; } return false; } template<typename T> bool chmax(T &a, T b) { if (a < b) {a = b; return true; } return false; } template<typename T> void print(T a) { cout << a << '\n'; } template<typename T, typename... Ts> void print(T a, Ts... ts) { cout << a << ' '; print(ts...); } template<typename T> istream &operator,(istream &in, T &t) { return in >> t; } // clang-format on template<ll MOD = 1000000007> class ModInt { ll n; ModInt constexpr inverse() const { return ModInt::pow(*this, MOD - 2); } public: ModInt() : n(0) {} ModInt(ll _n) : n(((_n % MOD) + MOD) % MOD) {} ModInt operator+=(const ModInt &m) { n += m.n; if (n >= MOD) n -= MOD; return *this; } ModInt operator-=(const ModInt &m) { n -= m.n; if (n < 0) n += MOD; return *this; } ModInt operator*=(const ModInt &m) { n *= m.n; if (n >= MOD) n %= MOD; return *this; } ModInt operator/=(const ModInt &m) { (*this) *= m.inverse(); return *this; } friend ModInt operator+(ModInt t, const ModInt &m) { return t += m; } friend ModInt operator-(ModInt t, const ModInt &m) { return t -= m; } friend ModInt operator*(ModInt t, const ModInt &m) { return t *= m; } friend ModInt operator/(ModInt t, const ModInt &m) { return t /= m; } ModInt operator=(const ll l) { n = l % MOD; if (n < 0) n += MOD; return *this; } friend ostream &operator<<(ostream &out, const ModInt &m) { out << m.n; return out; } friend istream &operator>>(istream &in, ModInt &m) { ll l; in >> l; m = l; return in; } static constexpr ModInt pow(const ModInt x, ll p) { ModInt<MOD> ans = 1; for (ModInt<MOD> m = x; p > 0; p /= 2, m *= m) { if (p % 2) ans *= m; } return ans; } }; using mint = ModInt<998244353>; mint operator"" _m(unsigned long long m) { return mint(m); } #include <map> class Eratosthenes { vector<int> plist; public: Eratosthenes(int sz) : plist(sz, -1) { for (int i = 2; i < sz; i++) { if (plist[i] == -1) { for (int j = i; j < sz; j += i) { if (plist[j] == -1) { plist[j] = i; } } } } } bool isPrime(int n) { return plist[n] == n; } map<int, int> factor(int n) { map<int, int> res; while (n > 1) { res[plist[n]]++; n /= plist[n]; } return res; } }; using T = tuple<int, int, int>; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int n; cin, n; Eratosthenes era(n + 1); vector<vector<T>> lst(n); map<int, int> mx1, mx2; mint ans = 1; rep(i, 1, n + 1) { auto res = era.factor(i); for (auto [e, c] : res) { lst[i - 1].emplace_back(e, c, 0); } for (auto &[e, c, t] : lst[i - 1]) { t = max(mx1[e], t); mx1[e] = max(mx1[e], c); } } for (auto [n, c] : mx1) { rep(i, 0, c) { ans *= n; } } for (int i = n; i >= 1; i--) { for (auto &[e, c, t] : lst[i - 1]) { t = max(mx2[e], t); mx2[e] = max(mx2[e], c); } } ll m = 1; rep(i, 1, n + 1) { ll t = 1; for (auto [e, c, cc] : lst[i - 1]) { rep(j, cc, c) { t *= e; } } chmax(m, t); } print(ans / m); return 0; }