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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#525576#8339. Rooted Treeliqingyang#AC ✓1185ms3704kbC++17538b2024-08-20 18:39:262024-08-20 18:39:26

Judging History

你现在查看的是最新测评结果

  • [2024-08-20 18:39:26]
  • 评测
  • 测评结果:AC
  • 用时:1185ms
  • 内存:3704kb
  • [2024-08-20 18:39:26]
  • 提交

answer

#include<iostream>
using namespace std;
const int mod=1e9+9;
inline int qpow(int a,int b)
{
	int ret=1;
	while(b)
	{
		if(b&1)
		{
			ret=(long long)
			ret*a%mod;
		}
		a=(long long)
		a*a%mod,b>>=1;
	}
	return ret;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	int m,k;
	cin>>m>>k;
	int f=0,ans=0;
	for(int i=1;i<=k;i++)
	{
		int g=(long long)f*qpow(1+(i-1)*(m-1),mod-2)%mod;
		ans=((long long)ans+(long long)m*(g+1))%mod;
		f=(f+(long long)(m-1)*g+m)%mod;
	}
	cout<<ans<<endl;
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3572kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3644kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 73ms
memory: 3540kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 796ms
memory: 3620kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

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

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 865ms
memory: 3572kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 486ms
memory: 3640kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1175ms
memory: 3620kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 214ms
memory: 3548kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 639ms
memory: 3628kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 381ms
memory: 3572kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 342ms
memory: 3552kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1021ms
memory: 3608kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1185ms
memory: 3632kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1184ms
memory: 3700kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1184ms
memory: 3608kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed