結果
問題 | No.1653 Squarefree |
ユーザー |
|
提出日時 | 2021-08-20 22:09:55 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,173 bytes |
コンパイル時間 | 3,054 ms |
コンパイル使用メモリ | 195,416 KB |
最終ジャッジ日時 | 2025-01-23 23:33:36 |
ジャッジサーバーID (参考情報) |
judge3 / judge3 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 32 WA * 6 |
ソースコード
#include <bits/stdc++.h>using namespace std;using ll = long long;using ld = long double;template<class T> using V = vector<T>;using VI = V<int>;using VL = V<ll>;using VS = V<string>;template<class T> using PQ = priority_queue<T, V<T>, greater<T>>;using graph = V<VI>;template<class T> using w_graph = V<V<pair<int, T>>>;#define FOR(i,a,n) for(int i=(a);i<(n);++i)#define eFOR(i,a,n) for(int i=(a);i<=(n);++i)#define rFOR(i,a,n) for(int i=(n)-1;i>=(a);--i)#define erFOR(i,a,n) for(int i=(n);i>=(a);--i)#define all(a) a.begin(),a.end()#define rall(a) a.rbegin(),a.rend()#define out(y,x) ((y)<0||h<=(y)||(x)<0||w<=(x))#ifdef _DEBUG#define line cout << "-----------------------------\n"#define stop system("pause")#endifconstexpr ll INF = 1000000000;constexpr ll LLINF = 1LL << 61;constexpr ll mod = 1000000007;constexpr ll MOD = 998244353;constexpr ld eps = 1e-10;template<class T>inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; }return false; }template<class T>inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; }return false; }inline void init() { cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); }template<class T>inline istream& operator>>(istream& is, V<T>& v) { for (auto& a : v)is >> a; return is; }template<class T, class U>inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }template<class T>inline V<T> vec(size_t a) { return V<T>(a); }template<class T>inline V<T> defvec(T def, size_t a) { return V<T>(a, def); }template<class T, class... Ts>inline auto vec(size_t a, Ts... ts) { return V<decltype(vec<T>(ts...))>(a, vec<T>(ts...)); }template<class T, class... Ts>inline auto defvec(T def, size_t a, Ts... ts) { return V<decltype(defvec<T>(def, ts...))>(a, defvec<T>(def, ts...)); }template<class T>inline void print(const T& a) { cout << a << "\n"; }template<class T, class... Ts>inline void print(const T& a, const Ts&... ts) { cout << a << " "; print(ts...); }template<class T>inline void print(const V<T>& v) { for (int i = 0; i < v.size(); ++i)cout << v[i] << (i == v.size() - 1 ? "\n" : " "); }template<class T>inline void print(const V<V<T>>& v) { for (auto& a : v)print(a); }template<class T>inline T sum(const V<T>& a, int l, int r) { return 0 <= l && l <= r && r < a.size() ? a[r] - (l == 0 ? 0 : a[l - 1]) : 0; }template<class T>inline void END(T s) { print(s); exit(0); }void END() { exit(0); }int main() {init();ll l, r; cin >> l >> r;V<bool> is(r - l + 1, true), p(r - l + 1, true);eFOR(i, 2, r - l) {if (!p[i])continue;for (int j = i * 2; j <= r - l; j += i)p[j] = false;ll sq = ll(i) * i;for (ll j = l / sq * sq; j <= r; j += sq) {if (0 <= j - l)is[j - l] = false;}}int ans = 0;for (ll i = l; i <= r; ++i) {if (!is[i - l])continue;ll sq = sqrt(i);bool f = true;for (ll j = max(2LL, sq - 2); j <= sq + 2; ++j) {f &= j * j != i;}if (f) {++ans;}}print(ans);return 0;}