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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#534700#8339. Rooted TreeTolret#AC ✓1173ms3724kbC++20901b2024-08-27 15:25:202024-08-27 15:25:21

Judging History

你现在查看的是最新测评结果

  • [2024-08-27 15:25:21]
  • 评测
  • 测评结果:AC
  • 用时:1173ms
  • 内存:3724kb
  • [2024-08-27 15:25:20]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long int
#define pb push_back
#define pii pair<int,int>
#define fi first
#define se second
using namespace std;
const int maxn=1e6+5;
const int inf=1e18;
int tt=1;
int m,k;
const int mod=1e9+9;
int quick(int x,int y)
{
    int yy=1;
    while(y)
    {
        if(y&1)
            yy=yy*x%mod;
        y>>=1;
        x=x*x%mod;
    }
    return yy;
}
void solve()
{
    cin>>m>>k;
    int cnt=1,ex=0;
    int sum=0;
    for(int i=1;i<=k;i++)
    {
        sum=(ex+sum)%mod;
        ex=((cnt-1+mod)%mod*ex%mod + m*(ex+1)%mod)%mod *quick((cnt-1+m)%mod,mod-2)%mod;
        cnt=(cnt+m-1)%mod;
    }
    cout<<(ex*cnt%mod+sum)%mod<<'\n';
 }
signed main()
{
	ios::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    cout<<fixed<<setprecision(10);
//    cin>>tt;
    for(int i=1;i<=tt;i++)
    solve();
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3584kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 72ms
memory: 3724kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 787ms
memory: 3648kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

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

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 857ms
memory: 3648kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 481ms
memory: 3652kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1160ms
memory: 3660kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 212ms
memory: 3648kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 635ms
memory: 3720kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 377ms
memory: 3584kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 343ms
memory: 3648kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1011ms
memory: 3648kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1173ms
memory: 3648kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1173ms
memory: 3664kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1173ms
memory: 3652kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed