QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#355319 | #8339. Rooted Tree | myheartwaving# | AC ✓ | 98ms | 81832kb | C++14 | 830b | 2024-03-16 15:52:17 | 2024-03-16 15:52:17 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
#define fast ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
using namespace std;
using pii = pair<int, int>;
using db = double;
void init();
void solve();
signed main(){
fast init();
int t = 1;
// cin >> t;
while(t--){
solve();
}
}
const int N = 1e7 + 10, M = N * 2, P = 998244353,mod=1000000009;
void init(){
return;
}
int qpow(int x,int ind)
{
int ans(1),now(x);
while(ind)
{
if(ind&1)
{
ans*=now;
ans%=mod;
}
now*=now;
now%=mod;
ind>>=1;
}
return ans;
}
int m,f,K,g,h[N];
void solve(){
cin>>m>>K;
h[0]=1;
for(int i=1;i<=K;i++)h[i]=h[i-1]*((i-1)*(m-1)+1)%mod;
for(int i=1;i<=K;i++)g=(m*f+g*((i-1)*(m-1)+1)+m*h[i])%mod,f=((m-1)*f+f*((i-1)*(m-1)+1)+m*h[i])%mod;
cout<<g*qpow(h[K],mod-2)%mod;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3660kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3712kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 7ms
memory: 9100kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 68ms
memory: 57640kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3596kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 74ms
memory: 61948kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 41ms
memory: 36392kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 98ms
memory: 81176kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 16ms
memory: 19276kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 50ms
memory: 47100kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 27ms
memory: 30652kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 31ms
memory: 28272kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 84ms
memory: 71196kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 91ms
memory: 81768kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 87ms
memory: 81776kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 91ms
memory: 81832kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed