Submission #1110801

#	Time	Username	Problem	Language	Result	Execution time	Memory
1110801		Thunnus	A Huge Tower (CEOI10_tower)	C++17	100 / 100	98 ms	11184 KiB

tower

#include<bits/stdc++.h>
using namespace std;
using i64 = long long;
#define int i64
#define vi vector<int>
#define vvi vector<vi>
#define vb vector<bool>
#define pii pair<int, int>
#define fi first
#define se second
#define sz(x) (int)(x).size()

const int MOD = 1e9 + 9;

inline void solve(){
    int n, d, ans = 1;
    cin >> n >> d;
    vi a(n);
    for(int &i : a){
        cin >> i;
    }
    sort(a.begin(), a.end());

    for(int le = 0, ri = 0; le < n; le++){
        while(ri < n - 1 && a[ri + 1] - a[le] <= d) ri++;
        ans = (ans * (ri - le + 1)) % MOD;
    }
    cout << ans << "\n";
    return;
}

signed main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
    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