Submission #553576

#	Time	Username	Problem	Language	Result	Execution time	Memory
553576		1BeeNY1	A Huge Tower (CEOI10_tower)	C++17	100 / 100	297 ms	8148 KiB

tower

#include <bits/stdc++.h>

using namespace std;

int n,d,v[1000005];
const int mod=1000000009;

int main()
{
    cin>>n>>d;
    for(int i=1; i<=n; i++) cin>>v[i];

    sort(v+1,v+n+1);
    int ways=1,pos=1;

    for(int i=2; i<=n; i++)
    {
        while(pos<i&&v[pos]+d<v[i]) pos++;
        ways=(long long)ways*(i-pos+1)%mod;
    }
    cout<<ways;

    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