Submission #634719

#	Time	Username	Problem	Language	Result	Execution time	Memory
634719		iulia13	A Huge Tower (CEOI10_tower)	C++14	100 / 100	260 ms	8776 KiB

tower

#include <bits/stdc++.h>

using namespace std;
#define ll long long
const int MOD = 1e9 + 9;
const int N = 1e6 + 5;
int v[N];
ll ans = 1;
int main()
{
    int n, d;
    cin >> n >> d;
    for (int i = 1; i <= n; i++)
        cin >> v[i];
    sort(v + 1, v + n + 1);
    int j = 1;
    ans = 1;
    for (int i = 2; i <= n; i++)
    {
        while (j < i && v[j] + d < v[i])
            j++;
        ans = ans * (1ll *(i - j + 1));
        ans %= MOD;
    }
    cout << ans;
    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