結果
問題 | No.1529 Constant Lcm |
ユーザー | jutama |
提出日時 | 2021-06-04 20:32:17 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 774 ms / 3,000 ms |
コード長 | 6,244 bytes |
コンパイル時間 | 3,833 ms |
コンパイル使用メモリ | 195,476 KB |
実行使用メモリ | 10,368 KB |
最終ジャッジ日時 | 2024-11-19 09:27:22 |
合計ジャッジ時間 | 12,286 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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 | 3 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 680 ms
9,856 KB |
testcase_11 | AC | 251 ms
6,016 KB |
testcase_12 | AC | 12 ms
5,248 KB |
testcase_13 | AC | 580 ms
8,832 KB |
testcase_14 | AC | 349 ms
6,912 KB |
testcase_15 | AC | 383 ms
7,040 KB |
testcase_16 | AC | 296 ms
6,272 KB |
testcase_17 | AC | 151 ms
5,248 KB |
testcase_18 | AC | 167 ms
5,248 KB |
testcase_19 | AC | 367 ms
7,168 KB |
testcase_20 | AC | 754 ms
10,240 KB |
testcase_21 | AC | 761 ms
10,240 KB |
testcase_22 | AC | 759 ms
10,240 KB |
testcase_23 | AC | 774 ms
10,240 KB |
testcase_24 | AC | 749 ms
10,368 KB |
testcase_25 | AC | 735 ms
10,368 KB |
ソースコード
#include <atcoder/all> #include <bitset> #include <fstream> #include <functional> #include <iostream> #include <iomanip> #include <limits> #include <map> #include <math.h> #include <queue> #include <set> #include <sstream> #include <stack> #include <stdio.h> #include <stdlib.h> #include <unordered_map> #include <unordered_set> #include <vector> using namespace std; using namespace atcoder; typedef long long ll; typedef long double ld; typedef std::pair<int, int> pii; typedef std::pair<ll, ll> pll; typedef std::pair<ld, ld> pid; typedef std::pair<ll, std::string> pls; typedef std::vector<bool> vb; typedef std::vector<vb> vvb; typedef std::vector<int> vi; typedef std::vector<vi> vvi; typedef std::vector<vvi> vvvi; typedef std::vector<vvvi> vvvvi; typedef std::vector<ll> vl; typedef std::vector<vl> vvl; typedef std::vector<vvl> vvvl; typedef std::vector<vvvl> vvvvl; typedef std::vector<ld> vd; typedef std::vector<vd> vvd; typedef std::vector<std::string> vs; #define rep(i,n) for(auto i=0; i<n; ++i) #define repm(i,s,n) for(auto i=s; i<n; ++i) #define repd(i,n) for(auto i=n-1; i>=0; --i) #define repdm(i,e,n) for(auto i=n-1; i>=e; --i) #define all(a) (a).begin(), (a).end() #define rall(a) (a).rbegin(), (a).rend() template <class T> inline bool chmax(T& a, T b, int eq = 0) { if (a < b || (a == b && eq)) { a = b; return 1; } return 0; } template <class T> inline bool chmin(T& a, T b, int eq = 0) { if (a > b || (a == b && eq)) { a = b; return 1; } return 0; } template <class mint, internal::is_modint_t<mint>* = nullptr> constexpr istream& operator>>(istream& is, mint& x) noexcept {long long v = 0; std::cin >> v; x = v; return is;} template <class mint, internal::is_modint_t<mint>* = nullptr> constexpr ostream& operator<<(ostream& os, const mint& x) noexcept {os << x.val(); return os;} inline void _n() { std::cout << std::endl; } template <class T> inline void _(const T a) { std::cout << a; } template <class T> inline void _l(const T a) { _(a); _n(); } template <class T> inline void _s(const T a) { _(a); _(' '); } template <class T> inline void _v(const std::vector<T> v) { for(auto a : v) _(a); } template <class T> inline void _vl(const std::vector<T> v) { for(auto a : v) _l(a); } template <class T> inline void _vs(const std::vector<T> v) { for(auto a : v) _s(a); _n(); } template <class T> inline void _vvl(const std::vector<std::vector<T>> v) { for(auto a : v) { _v(a); _n(); } } template <class T> inline void _vvs(const std::vector<std::vector<T>> v) { for(auto a : v) { _vs(a); } } inline void ynl(const bool b) {_l(b ? "yes" : "no");} inline void yns(const bool b) {_l(b ? "Yes" : "No");} inline void ynu(const bool b) {_l(b ? "YES" : "NO");} constexpr int INF = numeric_limits<int>::max() >> 1; constexpr long long INF_LL = numeric_limits<long long>::max() >> 1LL; const long long MOD1 = 1000000007; const long long MOD9 = 998244353; using mint1 = atcoder::modint1000000007; using mint9 = atcoder::modint998244353; //* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *// void input() { } struct sieve_E { public : sieve_E(long long n) : _n(n) { size = (_n/spp + 1) * srl; sieve = vector<bool>(size, true); sieving_prime = vector<unsigned long long>(size, 0); sieving(); } bool is_prime(long long n) { assert(0 <= n && n <= _n); if (n == 0 || n == 1) return false; for (auto p : sp) {if(n == p) return true; if(n%p == 0) return false;} return sieve[ntoi(n)]; } unsigned long long get_sieving_prime(long long n) { assert(0 <= n && n <= _n); if (n == 0 || n == 1) return 0; for (auto p : sp) {if(n%p == 0) return p;} if (is_prime(n)) return n; return sieving_prime[ntoi(n)]; } unsigned long long get_sieve_size() {return _n;} private : long long _n; unsigned long long size; std::vector<bool> sieve; std::vector<unsigned long long> sieving_prime; const std::vector<unsigned int> sp = {2, 3, 5}; // skip primes const std::vector<unsigned int> sr = {1, 7, 11, 13, 17, 19, 23, 29}; // stand reminders const unsigned int spp = 2 * 3 * 5; // skip primes product const unsigned int srl = 8; // stand reminders length void sieving() { unsigned long long max_i = ((unsigned long long)sqrt(_n)/spp + 1) * srl; for (unsigned long long i = 1; i <= max_i ; ++i) { if(!sieve[i]) continue; unsigned long long num_i = (unsigned long long)iton(i); for (unsigned long long j = num_i * num_i; j < (unsigned long long)_n; j += num_i) { long long idx_j = ntoi(j); if(idx_j > 0) { sieve[idx_j] = false; sieving_prime[idx_j] = num_i; } } } } unsigned long long iton(unsigned long long idx) { return (unsigned long long) ((idx/srl) * spp + sr[idx%srl]); } long long ntoi(unsigned long long num) { unsigned int sri = (unsigned int)(std::find(sr.begin(), sr.end(), num%spp) - sr.begin()); return sri == srl ? -1 : (num/spp) * srl + sri; } }; void solve() { int N; cin >> N; sieve_E sieve(N); map<ll, ll> mp; repm(i, 1, N) { ll tmp_s = i; ll tmp_b = N-i; if(tmp_s > tmp_b) break; map<ll, ll> tmp_mp; while(tmp_s > 1) { ll sp = sieve.get_sieving_prime(tmp_s); tmp_mp[sp]++; tmp_s /= sp; } while(tmp_b > 1) { ll sp = sieve.get_sieving_prime(tmp_b); tmp_mp[sp]++; tmp_b /= sp; } for(auto [k, v] : tmp_mp) { chmax(mp[k], v); } } mint9 ans = 1; for(auto [k, v] : mp) { ans *= pow_mod(k, v, MOD9); } _l(ans); } //* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *// int main() { std::ifstream in("input.txt"); std::cin.rdbuf(in.rdbuf()); std::cin.tie(0); std::ios::sync_with_stdio(false); input(); solve(); return 0; }