Submission #435182

#	Time	Username	Problem	Language	Result	Execution time	Memory
435182		vbee	A Huge Tower (CEOI10_tower)	C++14	100 / 100	143 ms	11216 KiB

tower

#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define ii pair<int,int>
#define vii vector<ii>
#define vi vector<int>
#define fi first
#define se second
#define TASK ""
#define pb push_back
#define MASK(i) (1 << (i))
#define BIT(x, i) ((x >> (i)) & 1)

using namespace std;

typedef long long ll;
const int oo = 1e9+9;

int msb(int x) {
	union { double a; int b[2]; };
	a = x;
	return (b[1] >> 20) - 1023;
}

ll nxt(){
	ll a;
	cin >> a;
	return a;
}

ll sqr(ll x){
	return x * x % oo;
}
const int N = 1e6 + 7;
ll n, a[N], d;
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin >> n >> d;
	for (int i = 1; i <= n; i++){
		cin >> a[i];
	}
	sort(a + 1, a + 1 + n);
	int r = 1;
	ll res = 1;
	for (int l = 1; l <= n; l++){
		while (r < n && a[r + 1] - a[l] <= d){
			r++;
		}
		res = res * (r - l + 1) % oo;
	}
	cout << res;
	return 0;
}

• 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
• Subtask 8: 5 / 5
• Subtask 9: 5 / 5
• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
• Subtask 12: 5 / 5
• Subtask 13: 5 / 5
• 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