結果
問題 |
No.3127 Multiple of Twin Prime
|
ユーザー |
|
提出日時 | 2025-04-25 21:37:27 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 259 ms / 2,500 ms |
コード長 | 3,160 bytes |
コンパイル時間 | 2,404 ms |
コンパイル使用メモリ | 203,524 KB |
実行使用メモリ | 82,508 KB |
最終ジャッジ日時 | 2025-04-25 21:37:47 |
合計ジャッジ時間 | 6,907 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 12 |
ソースコード
#include <bits/stdc++.h> #pragma GCC optimize("O3") #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") // mt19937 engine((unsigned ll)time(NULL)); // uniform_int_distribution<ll> distribution(0, (ll)1e18); // auto generator = bind(distribution, engine); // ll x = generator(); // #include <ext/pb_ds/assoc_container.hpp> // #include <ext/pb_ds/tree_policy.hpp> // using namespace __gnu_pbds; // #define ordered_set tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> // #define ordered_multiset tree<int, null_type, less_equal<int>, rb_tree_tag,tree_order_statistics_node_update> using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _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 all(v) (v).begin(), (v).end() #define rep(i, L, R) for(ll i = L;i<=R;i++) #define pcis precision #define sz(a) ((ll) a.size()) 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; vector<ll> linear_sieve(ll n) { vector<bool> sieve(n+1); vector<ll> primes(n+1); ll primecount = 0; for (ll i = 2; i <= n; i++) { if (!sieve[i]) primes[primecount++] = i; for (ll a = 0; a < primecount; a++) { ll p = primes[a]; if (i*p >= n+1) break; sieve[i*p] = true; if (i % p == 0) break; } } primes.resize(primecount); return primes; } void _main() { vl RES; vl lst = linear_sieve(1e7); ll K = lst.size(); for (ll i = 0; i<K-1; i++) { if (lst[i+1] == lst[i]+2) { RES.pb(lst[i]*lst[i+1]); } } RES.pb(lINF); ll T; cin >> T; while (T--) { ll N; cin >> N; if (N < RES[0]) { cout << -1 << endl; continue; } else { ll at = ub(all(RES), N) - RES.begin(); at--; cout << RES[at] << endl; } } }