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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
#409639#8339. Rooted Treewly_sh#AC ✓1123ms3652kbC++14497b2024-05-12 13:59:042024-05-12 13:59:04

Judging History

你现在查看的是最新测评结果

  • [2024-05-12 13:59:04]
  • 评测
  • 测评结果:AC
  • 用时:1123ms
  • 内存:3652kb
  • [2024-05-12 13:59:04]
  • 提交

answer

#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N=1e5+100;
const int mod=1e9+9;
ll ksm(ll x,ll p){
	ll ans=1;
	while(p){
		if(p%2) ans=ans*x%mod; 
		x=x*x%mod;
		p=p>>1;
	}
	return ans;
}
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0),cout.tie(0);
	ll m,k;cin>>m>>k;
	ll ans=0,x=1,t;
	for(ll i=1;i<=k;i++){
		ans= (ans + x*m%mod)%mod;
		t=(i*(m-1)+1)%mod;
		x= (x + m*ksm(t,mod-2)%mod) %mod;
	}
	cout<<ans; 
	return 0;
}
// 99 10000000

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3496kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3516kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 70ms
memory: 3652kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 752ms
memory: 3600kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

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

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 820ms
memory: 3584kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 461ms
memory: 3568kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1111ms
memory: 3592kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 203ms
memory: 3584kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 609ms
memory: 3552kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 361ms
memory: 3596kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 324ms
memory: 3588kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 968ms
memory: 3592kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1118ms
memory: 3588kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1123ms
memory: 3552kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1123ms
memory: 3528kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed