Submission #726906

#	Time	Username	Problem	Language	Result	Execution time	Memory
726906		techymonsterai	A Huge Tower (CEOI10_tower)	C++17	100 / 100	124 ms	8104 KiB

tower

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

constexpr int MOD = 1e9 + 9;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, d;
    cin >> n >> d;
    vector<int> a(n);
    for (int i = 0; i < n; i++)
        cin >> a[i];

    sort(a.begin(), a.end());
    long long ans = 1;
    for (int l = 0, r = 0; r < n; r++){
        while (a[r] - a[l] > d)
            l++;
        ans = (ans * (r - l + 1)) % MOD;
    }
    cout << ans << "\n";
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
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• Subtask 9: 5 / 5
• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
• Subtask 12: 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