QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#355319#8339. Rooted Treemyheartwaving#AC ✓98ms81832kbC++14830b2024-03-16 15:52:172024-03-16 15:52:17

Judging History

你现在查看的是最新测评结果

  • [2024-03-16 15:52:17]
  • 评测
  • 测评结果:AC
  • 用时:98ms
  • 内存:81832kb
  • [2024-03-16 15:52:17]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
#define fast ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
using namespace std;
using pii = pair<int, int>;
using db = double;
void init();
void solve();

signed main(){
	fast init();
	int t = 1;
//	cin >> t;
	while(t--){
		solve();
	}
}

const int N = 1e7 + 10, M = N * 2, P = 998244353,mod=1000000009;

void init(){
	return;
}

int qpow(int x,int ind)
{
	int ans(1),now(x);
	while(ind)
	{
		if(ind&1)
		{
			ans*=now;
			ans%=mod;
		}
		now*=now;
		now%=mod;
		ind>>=1;
	}
	return ans;
}
int m,f,K,g,h[N];

void solve(){
	cin>>m>>K;
	h[0]=1;
	for(int i=1;i<=K;i++)h[i]=h[i-1]*((i-1)*(m-1)+1)%mod;
	for(int i=1;i<=K;i++)g=(m*f+g*((i-1)*(m-1)+1)+m*h[i])%mod,f=((m-1)*f+f*((i-1)*(m-1)+1)+m*h[i])%mod;
	cout<<g*qpow(h[K],mod-2)%mod;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3660kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3712kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 7ms
memory: 9100kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 68ms
memory: 57640kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 74ms
memory: 61948kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 41ms
memory: 36392kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 98ms
memory: 81176kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 16ms
memory: 19276kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 50ms
memory: 47100kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 27ms
memory: 30652kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 31ms
memory: 28272kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 84ms
memory: 71196kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 91ms
memory: 81768kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 87ms
memory: 81776kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 91ms
memory: 81832kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed