結果
| 問題 |
No.458 異なる素数の和
|
| コンテスト | |
| ユーザー |
 Shuz*
|
| 提出日時 | 2020-06-28 13:04:50 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 105 ms / 2,000 ms |
| コード長 | 7,947 bytes |
| コンパイル時間 | 1,560 ms |
| コンパイル使用メモリ | 174,400 KB |
| 実行使用メモリ | 20,304 KB |
| 最終ジャッジ日時 | 2024-07-07 13:08:55 |
| 合計ジャッジ時間 | 3,722 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 28 |
コンパイルメッセージ
main.cpp:181:6: warning: literal operator suffixes not preceded by '_' are reserved for future standardization [-Wliteral-suffix]
181 | mint operator"" M(const ull n) { return mint(n); }
| ^~~~~~~~
ソースコード
#include <bits/stdc++.h>
using namespace std;
// Define
using ll = long long;
using ull = unsigned long long;
using ld = long double;
template <class T> using pvector = vector<pair<T, T>>;
template <class T>
using rpriority_queue = priority_queue<T, vector<T>, greater<T>>;
constexpr const ll dx[4] = {1, 0, -1, 0};
constexpr const ll dy[4] = {0, 1, 0, -1};
constexpr const ll MOD = 1e9 + 7;
constexpr const ll mod = 998244353;
constexpr const ll INF = 1LL << 60;
constexpr const ll inf = 1 << 30;
constexpr const char rt = '\n';
constexpr const char sp = ' ';
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define eb emplace_back
#define elif else if
#define fi first
#define se second
template <class T> bool chmax(T &a, const T &b) {
if (a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> bool chmin(T &a, const T &b) {
if (a > b) {
a = b;
return 1;
}
return 0;
}
// Debug
#define debug(...) \
{ \
cerr << __LINE__ << ": " << #__VA_ARGS__ << " = "; \
for (auto &&X : {__VA_ARGS__}) cerr << "[" << X << "] "; \
cerr << rt; \
}
#define dump(a, h, w) \
{ \
cerr << __LINE__ << ": " << #a << " = [" << rt; \
rep(_i, h) { \
rep(_j, w) { \
if (a[_i][_j] <= -INF / 2) cerr << '-'; \
if (abs(a[_i][_j]) >= INF / 2) \
cerr << "∞" << sp; \
else \
cerr << a[_i][_j] << sp; \
} \
cerr << rt; \
} \
cerr << "]" << rt; \
}
#define vdump(a, n) \
{ \
cerr << __LINE__ << ": " << #a << " = ["; \
rep(_i, n) { \
if (_i) cerr << sp; \
if (a[_i] <= -INF / 2) cerr << '-'; \
if (abs(a[_i]) >= INF / 2) \
cerr << "∞" << sp; \
else \
cerr << a[_i]; \
} \
cerr << "]" << rt; \
}
// Loop
#define inc(i, a, n) for (ll i = (a), _##i = (n); i <= _##i; ++i)
#define dec(i, a, n) for (ll i = (a), _##i = (n); i >= _##i; --i)
#define rep(i, n) for (ll i = 0, _##i = (n); i < _##i; ++i)
#define each(i, a) for (auto &&i : a)
// Stream
#define fout(n) cout << fixed << setprecision(n)
struct io {
io() { cin.tie(nullptr), ios::sync_with_stdio(false); }
} io;
// Speed
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
// Math
inline constexpr ll gcd(const ll a, const ll b) {
return b ? gcd(b, a % b) : a;
}
inline constexpr ll lcm(const ll a, const ll b) { return a / gcd(a, b) * b; }
inline constexpr ll modulo(const ll n, const ll m = MOD) {
ll k = n % m;
return k + m * (k < 0);
}
inline constexpr ll chmod(ll &n, const ll m = MOD) {
n %= m;
return n += m * (n < 0);
}
inline constexpr ll mpow(ll a, ll n, const ll m = MOD) {
ll r = 1;
rep(i, 64) {
if (n & (1LL << i)) r *= a;
chmod(r, m);
a *= a;
chmod(a, m);
}
return r;
}
inline ll inv(const ll n, const ll m = MOD) {
ll a = n, b = m, x = 1, y = 0;
while (b) {
ll t = a / b;
a -= t * b;
swap(a, b);
x -= t * y;
swap(x, y);
}
return modulo(x, m);
}
const ll mo = 1e9 + 7;
struct mint {
ll x;
mint(ll x = 0) : x((x % mo + mo) % mo) {}
mint operator-() const { return mint(-x); }
mint &operator+=(const mint &a) {
if ((x += a.x) >= mo) x -= mo;
return *this;
}
mint &operator-=(const mint &a) {
if ((x += mo - a.x) >= mo) x -= mo;
return *this;
}
mint &operator*=(const mint &a) {
(x *= a.x) %= mo;
return *this;
}
mint operator+(const mint &a) const { return mint(*this) += a; }
mint operator-(const mint &a) const { return mint(*this) -= a; }
mint operator*(const mint &a) const { return mint(*this) *= a; }
bool operator==(const mint &a) const { return x == a.x; }
bool operator!=(const mint &a) const { return x != a.x; }
bool operator<=(mint a) { return x <= a.x; }
bool operator<(mint a) { return x < a.x; }
friend ll abs(mint a) { return a.x; }
friend mint pow(const mint &a, ll n) {
if (!n) return 1;
mint b = pow(a, n >> 1);
b *= b;
if (n & 1) b *= a;
return b;
}
mint inv() const { return pow(*this, mo - 2); }
mint &operator/=(mint &a) { return (*this) *= a.inv(); }
mint operator/(mint a) const { return mint(*this) /= a; }
friend istream &operator>>(istream &is, mint &a) {
ll t;
is >> t;
a = mint(t);
return is;
}
friend ostream &operator<<(ostream &os, mint a) {
os << a.x;
return os;
}
};
mint operator"" M(const ull n) { return mint(n); }
struct modmath {
vector<mint> fac, inv;
modmath(ll n = 1 << 20) : fac(n + 1), inv(n + 1) {
fac[0] = 1;
rep(i, n) fac[i + 1] = fac[i] * (i + 1);
inv[n] = fac[n].inv();
dec(i, n - 1, 0) inv[i] = inv[i + 1] * (i + 1);
}
mint F(ll n) {
if (n < 0) return 0;
return fac[n];
}
mint P(ll n, ll r) {
if (r < 0 || n < r || n < 0) return 0;
return fac[n] * inv[n - r];
}
mint C(ll n, ll r) {
if (r < 0 || n < r || n < 0) return 0;
return fac[n] * inv[r] * inv[n - r];
}
mint c(ll n) {
if (n < 0) return 0;
return fac[2 * n] * inv[n] * inv[n + 1];
}
mint H(ll n, ll r) { return C(n + r - 1, n - 1); }
} math;
struct fact {
ll N;
vector<ll> A, B, C;
fact(ll n = 1 << 20) : N(n), A(n + 1, 1), B(n + 1), C(n + 1, 1) {
A[0] = A[1] = C[0] = C[1] = 0;
inc(i, 2, N) {
if (A[i] == 1) {
for (ll k = 2 * i; k <= N; k += i) {
A[k] = 0;
B[k] = i;
}
} else {
C[i] = C[i / B[i]] + 1;
}
}
}
bool p(ll n) { return A[n]; }
ll mf(ll n) { return B[n]; }
ll sf(ll n) { return C[n]; }
} fact(20000);
signed main() {
ll N;
cin >> N;
ll DP[N + 1];
rep(i, N + 1) DP[i] = -INF;
DP[0] = 0;
rep(i, N) dec(j, N, 0) {
if (fact.p(i + 1) and j + i + 1 <= N) {
chmax(DP[j + i + 1], DP[j] + 1);
}
}
cout << (DP[N] < 0 ? -1 : DP[N]) << rt;
}