結果

問題 No.2758 RDQ
ユーザー 👑 binap
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
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 21
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#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" : " "); return
    os;}
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=2774
struct 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;
}
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