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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#720720#8339. Rooted TreeAnotherDayofSun#AC ✓1237ms3948kbC++14653b2024-11-07 13:48:122024-11-07 13:48:13

Judging History

你现在查看的是最新测评结果

  • [2024-11-07 13:48:13]
  • 评测
  • 测评结果:AC
  • 用时:1237ms
  • 内存:3948kb
  • [2024-11-07 13:48:12]
  • 提交

answer

#include<bits/stdc++.h>
#define N 100005
#define re 
#define ll long long
#define P 1000000009
using namespace std;
int n,m,K,q,T;
inline void Rd(int &res){
	re char c;res=0;
	while(c=getchar(),c<48);
	do res=(res<<3)+(res<<1)+(c^48);
	while(c=getchar(),c>47);
}
inline int Pow(int x,int k){
	int res=1;
	while(k){
		if(k&1)res=1ll*res*x%P;
		x=1ll*x*x%P;
		k>>=1;
	}
	return res;
}
int main(){
	Rd(m),Rd(K);
	int a=0,b=0,c=1;
	int sum=0;
	for(int i=1;i<=K;i++){
		int d=b+1;
		d=1ll*d*m%P;
		a=(a+d)%P;

		sum=(0ll+sum-b+d+P)%P;
	
		c=(c+m-1)%P;

		b=1ll*sum*Pow(c,P-2)%P;
	}

	printf("%d\n",a);

	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3780kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3836kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 76ms
memory: 3876kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 831ms
memory: 3828kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 904ms
memory: 3820kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 508ms
memory: 3948kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1227ms
memory: 3824kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 223ms
memory: 3836kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 670ms
memory: 3876kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 398ms
memory: 3840kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 362ms
memory: 3824kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1065ms
memory: 3888kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1237ms
memory: 3804kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1229ms
memory: 3892kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1237ms
memory: 3836kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed