Submission #64547124

Source Code Expand

#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;
const ll C = 1e6 + 87;
ll lp[C];
vector<ll> pr;
vector<ll> ans;
void pre() {
	for (ll i = 2; i < C; i++) {
		if (lp[i] == 0) {
			lp[i] = i;
			pr.push_back(i);
		}
		for (auto j : pr) {
			if (i * j >= C)
				break;
			lp[i * j] = j;
			if (j == lp[i])
				break;
		}
	}
	for (ll pq = 6; pq < C; ++pq) {
		vector<ll> ps;
		ll t = pq;
		while (t > 1 && ps.size() <= 2) {
			ll p = lp[t];
			ps.push_back(p);
			while (t % p == 0) t /= p;
		}
		if (ps.size() == 2)
			ans.push_back(pq * pq);
	}
}
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	pre();
	int q;
	cin >> q;
	while (q--) {
		ll a;
		cin >> a;
		cout << *(upper_bound(ans.begin(), ans.end(), a) - 1) << '\n';
	}
}

Submission Info

Submission Time
Task E - Ringo's Favorite Numbers 3
User pr3pony
Language C++ 17 (gcc 12.2)
Score 425
Code Size 791 Byte
Status AC
Exec Time 133 ms
Memory 15724 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 425 / 425
Status
AC × 1
AC × 17
Set Name Test Cases
Sample sample00.txt
All sample00.txt, testcase00.txt, testcase01.txt, testcase02.txt, testcase03.txt, testcase04.txt, testcase05.txt, testcase06.txt, testcase07.txt, testcase08.txt, testcase09.txt, testcase10.txt, testcase11.txt, testcase12.txt, testcase13.txt, testcase14.txt, testcase15.txt
Case Name Status Exec Time Memory
sample00.txt AC 84 ms 15720 KiB
testcase00.txt AC 113 ms 15588 KiB
testcase01.txt AC 114 ms 15576 KiB
testcase02.txt AC 131 ms 15712 KiB
testcase03.txt AC 133 ms 15636 KiB
testcase04.txt AC 114 ms 15596 KiB
testcase05.txt AC 97 ms 15576 KiB
testcase06.txt AC 128 ms 15604 KiB
testcase07.txt AC 130 ms 15632 KiB
testcase08.txt AC 129 ms 15552 KiB
testcase09.txt AC 131 ms 15544 KiB
testcase10.txt AC 131 ms 15568 KiB
testcase11.txt AC 130 ms 15504 KiB
testcase12.txt AC 129 ms 15644 KiB
testcase13.txt AC 130 ms 15724 KiB
testcase14.txt AC 129 ms 15664 KiB
testcase15.txt AC 131 ms 15660 KiB