結果
問題 | No.458 異なる素数の和 |
ユーザー | penguinshunya |
提出日時 | 2020-01-29 04:20:58 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 63 ms / 2,000 ms |
コード長 | 3,447 bytes |
コンパイル時間 | 1,728 ms |
コンパイル使用メモリ | 176,688 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-09-15 16:34:41 |
合計ジャッジ時間 | 4,691 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 54 ms
6,812 KB |
testcase_01 | AC | 60 ms
6,816 KB |
testcase_02 | AC | 60 ms
6,948 KB |
testcase_03 | AC | 56 ms
6,940 KB |
testcase_04 | AC | 57 ms
6,940 KB |
testcase_05 | AC | 61 ms
6,944 KB |
testcase_06 | AC | 60 ms
6,944 KB |
testcase_07 | AC | 54 ms
6,940 KB |
testcase_08 | AC | 63 ms
6,940 KB |
testcase_09 | AC | 55 ms
6,940 KB |
testcase_10 | AC | 53 ms
6,944 KB |
testcase_11 | AC | 62 ms
6,944 KB |
testcase_12 | AC | 53 ms
6,944 KB |
testcase_13 | AC | 53 ms
6,940 KB |
testcase_14 | AC | 53 ms
6,940 KB |
testcase_15 | AC | 54 ms
6,940 KB |
testcase_16 | AC | 56 ms
6,944 KB |
testcase_17 | AC | 54 ms
6,944 KB |
testcase_18 | AC | 54 ms
6,944 KB |
testcase_19 | AC | 53 ms
6,940 KB |
testcase_20 | AC | 54 ms
6,940 KB |
testcase_21 | AC | 54 ms
6,944 KB |
testcase_22 | AC | 54 ms
6,944 KB |
testcase_23 | AC | 53 ms
6,940 KB |
testcase_24 | AC | 54 ms
6,944 KB |
testcase_25 | AC | 53 ms
6,944 KB |
testcase_26 | AC | 53 ms
6,944 KB |
testcase_27 | AC | 60 ms
6,944 KB |
testcase_28 | AC | 62 ms
6,940 KB |
testcase_29 | AC | 55 ms
6,940 KB |
testcase_30 | AC | 58 ms
6,944 KB |
ソースコード
#include <bits/stdc++.h> #define rep(i, n) for (int i = 0; i < int(n); i++) #define rrep(i, n) for (int i = int(n) - 1; i >= 0; i--) #define reps(i, n) for (int i = 1; i <= int(n); i++) #define rreps(i, n) for (int i = int(n); i >= 1; i--) #define repc(i, n) for (int i = 0; i <= int(n); i++) #define rrepc(i, n) for (int i = int(n); i >= 0; i--) #define repi(i, a, b) for (int i = int(a); i < int(b); i++) #define repic(i, a, b) for (int i = int(a); i <= int(b); i++) #define each(x, y) for (auto &x : y) #define all(a) (a).begin(), (a).end() #define bit(b) (1ll << (b)) using namespace std; using i32 = int; using i64 = long long; using u64 = unsigned long long; using f80 = long double; using vi32 = vector<i32>; using vi64 = vector<i64>; using vu64 = vector<u64>; using vf80 = vector<f80>; using vstr = vector<string>; inline void yes() { cout << "Yes" << '\n'; exit(0); } inline void no() { cout << "No" << '\n'; exit(0); } inline i64 gcd(i64 a, i64 b) { if (min(a, b) == 0) return max(a, b); if (a % b == 0) return b; return gcd(b, a % b); } inline i64 lcm(i64 a, i64 b) { return a / gcd(a, b) * b; } inline u64 xorshift() { static u64 x = 88172645463325252ull; x = x ^ (x << 7); return x = x ^ (x >> 9); } template <typename T> class pqasc : public priority_queue<T, vector<T>, greater<T>> {}; template <typename T> class pqdesc : public priority_queue<T, vector<T>, less<T>> {}; template <typename T> inline void amax(T &x, T y) { if (x < y) x = y; } template <typename T> inline void amin(T &x, T y) { if (x > y) x = y; } template <typename T> inline T exp(T x, i64 n, T e = 1) { T r = e; while (n > 0) { if (n & 1) r *= x; x *= x; n >>= 1; } return r; } template <typename T> inline T bis(T ok, T ng, function<bool(T)> f, T eps = 1) { while (abs(ok - ng) > eps) { T mi = (ok + ng) / 2; (f(mi) ? ok : ng) = mi; } return ok; } template <typename T> istream& operator>>(istream &is, vector<T> &v) { each(x, v) is >> x; return is; } template <typename T> ostream& operator<<(ostream &os, vector<T> &v) { rep(i, v.size()) { if (i) os << ' '; os << v[i]; } return os; } template <typename T, typename S> istream& operator>>(istream &is, pair<T, S> &p) { is >> p.first >> p.second; return is; } template <typename T, typename S> ostream& operator<<(ostream &os, pair<T, S> &p) { os << p.first << ' ' << p.second; return os; } void solve(); int main() { ios::sync_with_stdio(0); cin.tie(0); cout << fixed << setprecision(16); solve(); return 0; } struct Prime { int n; vector<int> pri; Prime() : n(0) {} Prime(int n) : n(n) { vector<bool> f(n, true); f[0] = f[1] = false; for (int i = 2; i < n; i++) { if (!f[i]) continue; pri.push_back(i); for (int j = i * 2; j < n; j += i) { f[j] = false; } } } bool is(int x) { if (n > x) { return binary_search(pri.begin(), pri.end(), x); } if (x < 2) return 0; for (int i = 2; i * i <= x; i++) { if (x % i == 0) return false; } return true; } map<int, int> factor(int k) { map<int, int> so; for (auto p : pri) { while (k % p == 0) k /= p, so[p]++; } if (k != 1) so[k] = 1; return so; } }; int dp[20001]; void solve() { int n; cin >> n; auto prime = Prime(20000); rep(i, 20001) dp[i] = -1; dp[0] = 0; each(p, prime.pri) rrep(j, 20000) { if (dp[j] == -1) continue; if (j + p > n) continue; amax(dp[j + p], dp[j] + 1); } cout << dp[n] << endl; }