QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#720720 | #8339. Rooted Tree | AnotherDayofSun# | AC ✓ | 1237ms | 3948kb | C++14 | 653b | 2024-11-07 13:48:12 | 2024-11-07 13:48:13 |
Judging History
answer
#include<bits/stdc++.h>
#define N 100005
#define re
#define ll long long
#define P 1000000009
using namespace std;
int n,m,K,q,T;
inline void Rd(int &res){
re char c;res=0;
while(c=getchar(),c<48);
do res=(res<<3)+(res<<1)+(c^48);
while(c=getchar(),c>47);
}
inline int Pow(int x,int k){
int res=1;
while(k){
if(k&1)res=1ll*res*x%P;
x=1ll*x*x%P;
k>>=1;
}
return res;
}
int main(){
Rd(m),Rd(K);
int a=0,b=0,c=1;
int sum=0;
for(int i=1;i<=K;i++){
int d=b+1;
d=1ll*d*m%P;
a=(a+d)%P;
sum=(0ll+sum-b+d+P)%P;
c=(c+m-1)%P;
b=1ll*sum*Pow(c,P-2)%P;
}
printf("%d\n",a);
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3780kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3836kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 76ms
memory: 3876kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 831ms
memory: 3828kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 904ms
memory: 3820kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 508ms
memory: 3948kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1227ms
memory: 3824kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 223ms
memory: 3836kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 670ms
memory: 3876kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 398ms
memory: 3840kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 362ms
memory: 3824kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 1065ms
memory: 3888kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1237ms
memory: 3804kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1229ms
memory: 3892kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1237ms
memory: 3836kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed