QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#262817#5746. DAG Generationw4p3r#AC ✓23ms4544kbC++201.5kb2023-11-24 05:38:182023-11-24 05:38:18

Judging History

你现在查看的是最新测评结果

  • [2023-11-24 05:38:18]
  • 评测
  • 测评结果:AC
  • 用时:23ms
  • 内存:4544kb
  • [2023-11-24 05:38:18]
  • 提交

answer

#include<bits/stdc++.h>
#define inf 1e9
#define eps 1e-6
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define REP(i,a,b) for(int i=a;i>=b;i--)
#define db double
#define ve vector<int>
#define pa pair<int,int>
#define fr first
#define sd second
#define pb push_back
#define mp make_pair
#define MEM(a) memset(a,0,sizeof(a))
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
inline ll read()
{
	char ch = getchar();
	ll s = 0, w = 1;
	while (ch < '0' || ch > '9') {if (ch == '-')w = -1; ch = getchar();}
	while (ch >= '0' && ch <= '9') {s = s * 10 + ch - '0'; ch = getchar();}
	return s * w;
}
#define N 100010
int n, inv[N], P[N], iP[N];
int ans[N];
const int mod = int(1e9 + 9);
int ksm(int a, int b)
{
	int ans = 1;
	while (b) {if (b & 1)ans = 1LL * ans * a % mod; b >>= 1; a = 1LL * a * a % mod;}
	return ans;
}
void sol()
{
	cin >> n;
	cout << (1 + mod - ans[n]) % mod << '\n';
}
void pre(int n)
{
	inv[0] = inv[1] = 1;
	for (int i = 2; i <= n; i ++)inv[i] = 1LL * inv[mod % i] * (mod - mod / i) % mod;
	P[0] = 1;
	for (int i = 1; i <= n; i ++)P[i] = (P[i - 1] + P[i - 1]) % mod;
	ans[0] = 1;
	for (int i = 1; i <= n; i ++)
	{
		ans[i] = 1LL * ans[i - 1] * (P[i] + mod - 1) % mod * ksm(1LL * P[i - 1] * P[i - 1] % mod, mod - 2) % mod * inv[i] % mod;
	}
}
signed main()
{
	//freopen(".in","r",stdin);
	//freopen(".out","w",stdout);
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int T; cin >> T;
	pre(N - 10);
	while (T --)sol();
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 16ms
memory: 4540kb

input:

4
1
2
3
100

output:

0
375000004
117187502
778748905

result:

ok 4 number(s): "0 375000004 117187502 778748905"

Test #2:

score: 0
Accepted
time: 12ms
memory: 4532kb

input:

5
1
2
3
4
5

output:

0
375000004
117187502
213897708
995024095

result:

ok 5 number(s): "0 375000004 117187502 213897708 995024095"

Test #3:

score: 0
Accepted
time: 23ms
memory: 4544kb

input:

100000
64268
66535
9758
42907
84212
83488
27748
86198
80658
11614
93419
2528
96160
79473
83517
43109
37111
46603
93665
54540
84236
62717
24719
57225
8333
15728
40821
31719
13096
75018
76890
46244
75863
59618
67460
10326
84775
11276
83363
72071
9353
94316
9469
3969
78568
53071
96835
50125
2728
46756
...

output:

517835222
425525315
415451955
804144524
465143750
248034271
13166687
703325946
341000020
13797696
905521918
608927142
591090671
501585335
146368913
172358003
116621710
241875456
448868678
155749600
350155635
599343092
400133403
78229211
452768218
582618783
811512224
912730301
470660521
250329917
370...

result:

ok 100000 numbers