제출 #1340496

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1340496		greendoubledecker	A Huge Tower (CEOI10_tower)	C++20	100 / 100	235 ms	5260 KiB

tower

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
	ll n, k;
	cin >> n >> k;
	vector<ll> v(n);
	for(ll i = 0; i < n; ++i){
		cin >> v[i];
	}
	sort(v.begin(), v.end());
	ll ans = 1;
	for(ll i = 0; i < n; ++i){
		auto boundary = lower_bound(v.begin(), v.end(), v[i] - k);
		ll num = (((v.end() - boundary) + 1) - (n - i)) % (ll)(1e9 + 9);
		ans *= num;
		ans %= (ll)(1e9 + 9);
	}
	cout << ans << endl;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
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• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
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• Subtask 14: 5 / 5
• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
• Subtask 17: 5 / 5
• Subtask 18: 5 / 5
• Subtask 19: 5 / 5
• Subtask 20: 5 / 5