QOJ.ac
QOJ
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| #525576 | #8339. Rooted Tree | liqingyang# | AC ✓ | 1185ms | 3704kb | C++17 | 538b | 2024-08-20 18:39:26 | 2024-08-20 18:39:26 |
Judging History
answer
#include<iostream>
using namespace std;
const int mod=1e9+9;
inline int qpow(int a,int b)
{
int ret=1;
while(b)
{
if(b&1)
{
ret=(long long)
ret*a%mod;
}
a=(long long)
a*a%mod,b>>=1;
}
return ret;
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int m,k;
cin>>m>>k;
int f=0,ans=0;
for(int i=1;i<=k;i++)
{
int g=(long long)f*qpow(1+(i-1)*(m-1),mod-2)%mod;
ans=((long long)ans+(long long)m*(g+1))%mod;
f=(f+(long long)(m-1)*g+m)%mod;
}
cout<<ans<<endl;
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3572kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 73ms
memory: 3540kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 796ms
memory: 3620kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 865ms
memory: 3572kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 486ms
memory: 3640kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1175ms
memory: 3620kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 214ms
memory: 3548kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 639ms
memory: 3628kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 381ms
memory: 3572kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 342ms
memory: 3552kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 1021ms
memory: 3608kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1185ms
memory: 3632kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1184ms
memory: 3700kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1184ms
memory: 3608kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed