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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#668274#8339. Rooted Treekjhhjki_fan#TL 1435ms57680kbC++20433b2024-10-23 13:16:272024-10-23 13:16:31

Judging History

你现在查看的是最新测评结果

  • [2024-10-23 13:16:31]
  • 评测
  • 测评结果:TL
  • 用时:1435ms
  • 内存:57680kb
  • [2024-10-23 13:16:27]
  • 提交

answer

#include<bits/stdc++.h>
#define ll long long
#define N 10000010
using namespace std;
int m,k;
ll mod=1e9+9,f[N],sum;

inline ll ksm(ll p,ll k){
	ll rt=1;
	while(k){
		if(k&1) rt=rt*p%mod;
		p=p*p%mod;
		k>>=1;
	}
	return rt;
}

int main(){
	cin>>m>>k;
	for(int i=1;i<=k;i++){
		f[i]=((i-1)*(m-1)*f[i-1]+m*(f[i-1]+1))%mod*ksm(i*(m-1)+1,mod-2)%mod;
		sum+=(f[i-1]+1)*m;
		sum%=mod;
	}
	cout<<sum;
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3624kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3688kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 133ms
memory: 10368kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 1435ms
memory: 57680kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

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

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: -100
Time Limit Exceeded

input:

28 7304152

output:

457266679

result: