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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 |
---|---|---|---|---|---|---|---|---|---|
#586752 | #8339. Rooted Tree | Repeater# | AC ✓ | 1088ms | 3708kb | C++20 | 657b | 2024-09-24 15:21:52 | 2024-09-24 15:21:54 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int mod = 1e9 + 9;
ll power(ll a, ll b){
ll res = 1;
while(b){
if(b & 1)
res = res * a % mod;
a = a * a % mod;
b >>= 1;
}
return res;
}
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
int m, k;
cin >> m >> k;
ll ans = 0, cur = 0;
for(int i = 1; i <= k; i++){
ans = (ans + cur) % mod;
ll tmp = ((m - 1) * i + 1) % mod;
cur = (cur * tmp + m) % mod * power(tmp, mod - 2) % mod;
}
ans = (ans + cur * ((m - 1) * k % mod + 1) % mod) % mod;
// cout << cur << "\n";
cout << ans << "\n";
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3568kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3648kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 67ms
memory: 3580kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 730ms
memory: 3584kb
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: 794ms
memory: 3584kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 446ms
memory: 3688kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1075ms
memory: 3648kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 196ms
memory: 3624kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 589ms
memory: 3560kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 349ms
memory: 3648kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 318ms
memory: 3672kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 935ms
memory: 3612kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1088ms
memory: 3644kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1088ms
memory: 3708kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1087ms
memory: 3644kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed