QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#639117 | #8339. Rooted Tree | YinyuDream | AC ✓ | 1173ms | 3736kb | C++20 | 646b | 2024-10-13 17:59:29 | 2024-10-13 17:59:35 |
Judging History
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