結果
問題 | No.2829 GCD Divination |
ユーザー | dadas |
提出日時 | 2024-08-02 22:46:47 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,553 bytes |
コンパイル時間 | 1,881 ms |
コンパイル使用メモリ | 169,352 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-08-02 22:46:50 |
合計ジャッジ時間 | 3,436 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | AC | 2 ms
6,940 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | AC | 1 ms
6,940 KB |
testcase_21 | WA | - |
testcase_22 | AC | 2 ms
6,944 KB |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | AC | 3 ms
6,940 KB |
testcase_28 | WA | - |
testcase_29 | AC | 2 ms
6,940 KB |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; void _main(); int main() { _main(); return 0; } using ll = long long; using ull = unsigned long long; using ld = long double; using vi = std::vector<int>; using vvi = std::vector<vi>; using vl = std::vector<ll>; using vii = std::vector<pair<int, int> >; using vvl = std::vector<vl>; using vll = std::vector<pair<ll , ll> >; using vd = std::vector<double>; using vvd = std::vector<vd>; using vs = std::vector<std::string>; using vvs = std::vector<vs>; using vb = std::vector<bool>; using vvb = std::vector<vb>; using vc = std::vector<char>; using vvc = std::vector<vc>; using pii = std::pair<int, int>; using pll = std::pair<ll, ll>; using piil = std::pair<pair<int, int>, ll>; using mii = std::map<int, int>; using mll = std::map<ll, ll>; using pql = std::priority_queue<ll>; using pqi = std::priority_queue<int>; using pqiil = std::priority_queue<pair<pair<int, int>, ll> >; using pqii = std::priority_queue<pair<int, int> >; #define pb push_back #define ps push #define eb emplace_back #define is insert #define er erase #define f first #define s second #define lb lower_bound #define ub upper_bound #define sf(i) sizeof(i) #define endl "\n" #define sz(v) ((int)(v).size()) #define all(v) (v).begin(), (v).end() #define rep(i, L, R) for(ll i = L;i<=R;i++) #define pcis precision template<typename T> struct infinity { static constexpr T max=std::numeric_limits<T>::max(); static constexpr T min=std::numeric_limits<T>::min(); static constexpr T value=std::numeric_limits<T>::max()/2; static constexpr T mvalue=std::numeric_limits<T>::min()/2; }; template<typename T>constexpr T INF=infinity<T>::value; constexpr ll lINF=INF<ll>; constexpr int iINF = INF<int>; constexpr ld PI = 3.1415926535897932384626; double is[10000001]; ll phi(ll N) { if (is[N] != 0)return is[N]; ll res = N; for (long i = 2; i <= sqrt(N); i++) { if (N % i == 0) { res = res - res / i; while (N % i == 0) N /= i; } } if (N > 1) res = res - res / N; return is[N] = res; } ll gcd(ll a, ll b) { if (b==0)return a; else return gcd(b, a%b); } double DP[10000001]; // N일때 기댓값 반환 ld GET(ll N) { if (N==1)return 0; if (DP[N] != 0)return DP[N]; ld kitai = 0; for (ll i = 1; i*i<=N; i++) { // i가 되는 경우 if (N%i == 0) { kitai += GET(i)*((ld)phi(N/i)); if (i != 1 && i*i != N) { kitai += GET(N/i)*((ld)phi(i)); } } } kitai+=N; kitai = (kitai)/((ld)N-1); return DP[N] = kitai; } void _main() { ll N; cin >> N; cout.pcis(15); cout << GET(N) << endl; }