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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#414616#8339. Rooted TreeMN2016#AC ✓1376ms160196kbC++14708b2024-05-19 12:06:512024-05-19 12:06:51

Judging History

你现在查看的是最新测评结果

  • [2024-05-19 12:06:51]
  • 评测
  • 测评结果:AC
  • 用时:1376ms
  • 内存:160196kb
  • [2024-05-19 12:06:51]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
const int maxn=10000010,mod=1000000009;
int M,K,n[maxn],f[maxn],g[maxn],ni[maxn];

int qp(int a,int b)
{
	int res=1;
	for (;b;b>>=1)
	{
		if (b&1)
			res=1ll*res*a%mod;
		a=1ll*a*a%mod;
	}
	return res;
}

int inc(int a,int b)
{
	a+=b;
	if (a>=mod)
		a-=mod;
	return a;
}

int main()
{
	scanf("%d%d",&M,&K);
	for (int i=1;i<=K;i++)
		n[i]=1+(M-1)*i,ni[i]=qp(n[i],mod-2);
	n[0]=ni[0]=1;
	for (int i=1;i<=K;i++)
	{
		f[i]=inc(1ll*inc(1ll*f[i-1]*ni[i-1]%mod,1)*M%mod,1ll*f[i-1]*ni[i-1]%mod*inc(n[i-1],mod-1)%mod);
		g[i]=inc(g[i-1],1ll*f[i-1]*ni[i-1]%mod);
	}
	printf("%d\n",inc(f[K],g[K]));
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 5848kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 1ms
memory: 5868kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 88ms
memory: 17840kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 914ms
memory: 113556kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 5848kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 1000ms
memory: 124128kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 557ms
memory: 75236kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1370ms
memory: 159708kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 247ms
memory: 35932kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 736ms
memory: 97164kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 435ms
memory: 61140kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 402ms
memory: 52492kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1182ms
memory: 141136kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1376ms
memory: 160036kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1374ms
memory: 160112kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1364ms
memory: 160196kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed