Submission #1160220

#	Time	Username	Problem	Language	Result	Execution time	Memory
1160220		wildhonestfur	A Huge Tower (CEOI10_tower)	C++20	100 / 100	173 ms	5260 KiB

tower

#include <bits/stdc++.h>
using namespace std;

int main() {
	long long n, d;
    cin >> n >> d;
    long long a[n] = {};
    for (long long i = 0; i < n; i++) {
        cin >> a[i];
    }
    sort(a, a+n);
    long long left = 0;
    long long ans = 1;
    for (long long right = 0; right < n; right++) {
        while (a[right]-a[left] > d) {
            left++;
        }
        ans *= (right-left+1);
        ans %= 1000000009;
    }
    cout << ans << "\n";
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
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• Subtask 5: 5 / 5
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• Subtask 10: 5 / 5
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• Subtask 19: 5 / 5
• Subtask 20: 5 / 5