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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#639117#8339. Rooted TreeYinyuDreamAC ✓1173ms3736kbC++20646b2024-10-13 17:59:292024-10-13 17:59:35

Judging History

你现在查看的是最新测评结果

  • [2024-10-13 17:59:35]
  • 评测
  • 测评结果:AC
  • 用时:1173ms
  • 内存:3736kb
  • [2024-10-13 17:59:29]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll p=1e9+9;
int ksm(int a,int b){
    int res=1;
    while(b){
        if(b&1){
            res=1ll*res*a%p;
        }
        a=1ll*a*a%p;
        b>>=1;
    }
    return res;
}
int main(){
    ll m,k;
    cin>>m>>k;
    ll val0=1,f0=1,g0=0,val1,f1,g1;
    for(int i=1;i<=k;i++){
        val1=val0+m-1;
        if(val1>=p){
            val1-=p;
        }
        f1=(f0*(val0-1)%p+m*(f0+1))%p;
        f1=f1*ksm(val1,p-2)%p;
        g1=(g0+m*f0)%p;
        f0=f1;
        g0=g1;
        val0=val1;
    }
    cout<<g0<<endl;
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3600kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

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

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 72ms
memory: 3652kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 788ms
memory: 3656kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

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

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 857ms
memory: 3732kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 482ms
memory: 3620kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1164ms
memory: 3736kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 212ms
memory: 3724kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 636ms
memory: 3644kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 377ms
memory: 3652kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 343ms
memory: 3532kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1011ms
memory: 3584kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1173ms
memory: 3736kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1173ms
memory: 3668kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1170ms
memory: 3664kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed