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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
#578517#8339. Rooted Treered#AC ✓1135ms3704kbC++20629b2024-09-20 19:43:482024-09-20 19:43:49

Judging History

你现在查看的是最新测评结果

  • [2024-09-20 19:43:49]
  • 评测
  • 测评结果:AC
  • 用时:1135ms
  • 内存:3704kb
  • [2024-09-20 19:43:48]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int mod=1e9+9;
int fast(int x,int k)
{
	int ret=1;
	while(k)
	{
		if(k&1) ret=ret*x%mod;
		x=x*x%mod;
		k>>=1;
	}
	return ret;
}
void solve()
{
	int m,k;
	cin>>m>>k;
	int ret=0;
	int ans=0;
	for(int i=1;i<=k;++i)
	{
		int tmp=ret*((m-1)*(i-1)%mod)%mod+(ret+1)*m%mod;
		ans+=(ret+1)*m%mod;

		tmp=tmp%mod;
		tmp=tmp*fast((m-1)*i%mod+1,mod-2)%mod;
		ret=tmp%mod;
		
		ans%=mod;
	}
	cout<<ans%mod<<'\n';

}
signed main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	int T=1;
	//cin>>T;
	while(T--) solve();
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3640kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3556kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 70ms
memory: 3608kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 762ms
memory: 3628kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3636kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 829ms
memory: 3704kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 465ms
memory: 3628kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1126ms
memory: 3572kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 201ms
memory: 3552kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 615ms
memory: 3608kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 364ms
memory: 3612kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 332ms
memory: 3700kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 977ms
memory: 3636kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1134ms
memory: 3552kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1135ms
memory: 3608kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1134ms
memory: 3624kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed