Submission #964495

#	Time	Username	Problem	Language	Result	Execution time	Memory
964495		12345678	A Huge Tower (CEOI10_tower)	C++17	100 / 100	93 ms	8888 KiB

tower

#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int mod=1e9+9;

ll n, d, ans=1, x;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>d;
    vector<int> v(n);
    for (auto &x:v) cin>>x;
    sort(v.begin(), v.end());
    for (int i=0; i<n; i++)
    {
        while (v[x]+d<v[i]) x++;
        ans=(ans*(i-x+1))%mod;
    }
    cout<<ans;
}

• 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 10: 5 / 5
• Subtask 11: 5 / 5
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• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
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• Subtask 18: 5 / 5
• Subtask 19: 5 / 5
• Subtask 20: 5 / 5