QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#534700 | #8339. Rooted Tree | Tolret# | AC ✓ | 1173ms | 3724kb | C++20 | 901b | 2024-08-27 15:25:20 | 2024-08-27 15:25:21 |
Judging History
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