結果
問題 | No.2758 RDQ |
ユーザー |
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提出日時 | 2024-05-03 19:04:36 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 321 ms / 2,000 ms |
コード長 | 2,524 bytes |
コンパイル時間 | 3,620 ms |
コンパイル使用メモリ | 253,796 KB |
最終ジャッジ日時 | 2025-02-21 10:48:01 |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 21 |
ソースコード
#include<bits/stdc++.h>#include<atcoder/all>#define rep(i,n) for(int i=0;i<n;i++)using namespace std;using namespace atcoder;typedef long long ll;typedef vector<int> vi;typedef vector<long long> vl;typedef vector<vector<int>> vvi;typedef vector<vector<long long>> vvl;typedef long double ld;typedef pair<int, int> P;ostream& operator<<(ostream& os, const modint& a) {os << a.val(); return os;}template <int m> ostream& operator<<(ostream& os, const static_modint<m>& a) {os << a.val(); return os;}template <int m> ostream& operator<<(ostream& os, const dynamic_modint<m>& a) {os << a.val(); return os;}template<typename T> istream& operator>>(istream& is, vector<T>& v){int n = v.size(); assert(n > 0); rep(i, n) is >> v[i]; return is;}template<typename U, typename T> ostream& operator<<(ostream& os, const pair<U, T>& p){os << p.first << ' ' << p.second; return os;}template<typename T> ostream& operator<<(ostream& os, const vector<T>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : " "); returnos;}template<typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : "");return os;}template<typename T> void chmin(T& a, T b){a = min(a, b);}template<typename T> void chmax(T& a, T b){a = max(a, b);}// Sieve of Eratosthenes// https://youtu.be/UTVg7wzMWQc?t=2774struct Sieve {int n;vector<int> f, primes;Sieve(int n=1):n(n), f(n+1) {f[0] = f[1] = -1;for (ll i = 2; i <= n; ++i) {if (f[i]) continue;primes.push_back(i);f[i] = i;for (ll j = i*i; j <= n; j += i) {if (!f[j]) f[j] = i;}}}vector<long long> enum_divisors(long long x){vector<long long> res;for(long long i = 1; i <= n; i++){if(x % i == 0){long long square = i * i;if(x > square){res.push_back(i);res.push_back(x / i);}else if(x == square){res.push_back(i);}else break;}}return res;}};const int M = 100000;int main(){int n, q;cin >> n >> q;vector<int> a(n);cin >> a;Sieve sieve(330);vector<vector<int>> cnt(M + 1);rep(i, n){auto divisors = sieve.enum_divisors(a[i]);for(int x : divisors){cnt[x].push_back(i);}}rep(i, q){int l, r, k;cin >> l >> r >> k;l--; r--;int li = lower_bound(cnt[k].begin(), cnt[k].end(), l) - cnt[k].begin();int ri = prev(upper_bound(cnt[k].begin(), cnt[k].end(), r)) - cnt[k].begin();cout << ri - li + 1 << "\n";}return 0;}