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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
#735898#8339. Rooted Treeqikala7777#AC ✓232ms318492kbC++231.1kb2024-11-11 22:29:232024-11-11 22:29:24

Judging History

你现在查看的是最新测评结果

  • [2024-11-11 22:29:24]
  • 评测
  • 测评结果:AC
  • 用时:232ms
  • 内存:318492kb
  • [2024-11-11 22:29:23]
  • 提交

answer

#include<bits/stdc++.h>
#define IOS ios::sync_with_stdio(false);cin.tie(0);
#define endl '\n'
using namespace std;
typedef long long LL;
typedef unsigned long long ULL;
typedef tuple<int,LL,LL> TPL;
typedef pair<LL,LL> PII;
const int N=1e7+7,inf=0x3f3f3f3f;const LL Linf=0x3f3f3f3f3f3f3f3fLL;
LL qsm(LL a,LL b,LL p){LL res=1;while(b){if(b&1)res=res*a%p;a=a*a%p;b>>=1;}return res;}
LL lowbit(LL x){return x&-x;}
const LL mod=1e9+9;
LL M,K;
LL res,dep[N],cnt[N],a[N];
LL up[N],down[N];
void init(){
    LL tt=1;
    up[0]=down[0]=1;
    for(int i=1;i<=K;i++){
        tt+=M-1;
        up[i]=up[i-1]*tt%mod;
    }
    down[K] = qsm(up[K],mod-2,mod);
	for (int i = K-1; i; i--){
        down[i] = down[i + 1] * tt % mod;
        tt -= M - 1;
    }
}
void solve(){
    cin>>M>>K;
    init();
    dep[0]=0,res=0,cnt[0]=1;
    for(int i=1;i<=K;i++){
        res=(res+(dep[i-1]+1)*M%mod)%mod;
        dep[i]=(dep[i-1]*(cnt[i-1]-1)%mod+(dep[i-1]+1)*M%mod)*up[i-1]%mod*down[i]%mod;
        cnt[i]=(cnt[i-1]+M-1);
    }
    cout<<res<<endl;
}
int main(){
   IOS
   int T=1;
   //cin>>T;
    while(T--)solve();

    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 9804kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 1ms
memory: 9876kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 18ms
memory: 29940kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 159ms
memory: 221840kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 9856kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 166ms
memory: 237884kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 91ms
memory: 138644kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 222ms
memory: 318020kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 27ms
memory: 67536kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 124ms
memory: 181360kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 69ms
memory: 110100kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 65ms
memory: 100676kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 189ms
memory: 278152kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 219ms
memory: 316388kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 220ms
memory: 318492kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 232ms
memory: 318424kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed