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 |
|---|---|---|---|---|---|---|---|---|---|
| #549686 | #8339. Rooted Tree | rotcar07 | AC ✓ | 1032ms | 3716kb | C++14 | 393b | 2024-09-06 19:38:06 | 2024-09-06 19:38:07 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
constexpr ll mod=1e9+9;
ll qpow(ll a,int b){
ll ans=1;
while(b){
if(b&1) ans=ans*a%mod;
a=a*a%mod,b>>=1;
}
return ans;
}
int main(){
ll m,k;cin>>m>>k;
ll ans=0;
for(int i=1;i<=k;i++) ans+=(m*k+1-i+mod)%mod*qpow((m-1)*i+1,mod-2)%mod;
cout<<ans%mod*m%mod<<'\n';
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3644kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3684kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 64ms
memory: 3696kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 694ms
memory: 3696kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 755ms
memory: 3548kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 420ms
memory: 3548kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1025ms
memory: 3624kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 187ms
memory: 3632kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 560ms
memory: 3588kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 332ms
memory: 3712kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 302ms
memory: 3716kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 890ms
memory: 3628kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1032ms
memory: 3628kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1032ms
memory: 3504kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1032ms
memory: 3712kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed