QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#347892 | #8339. Rooted Tree | ucup-team2432# | AC ✓ | 1112ms | 3668kb | C++20 | 749b | 2024-03-09 16:07:47 | 2024-03-09 16:07:47 |
Judging History
answer
#include "bits/stdc++.h"
#define all(x) x.begin(), x.end()
#define NL std::cout << '\n'
using lnt = long long;
const int inf = 0x3f3f3f3f;
const lnt linf = 1ll << 62;
int main() {
std::ios::sync_with_stdio(0), std::cin.tie(0);
const int mo = 1e9 + 9;
auto inv = [&](lnt x) {
int e = mo - 2;
lnt ret = 1;
while (e) {
if (e & 1) { ret = ret * x % mo; }
e >>= 1; x = x * x % mo;
}
return ret;
};
int m, Q; std::cin >> m >> Q;
lnt contri = 0;
lnt dep = 1;
lnt k = 1;
while (Q--) {
contri = (contri + dep * m % mo) % mo;
dep = ((k-1) * dep + (dep+1) * m % mo) % mo * inv(k+m-1) % mo;
k = k + (m-1);
}
std::cout << contri;
return 0;
}
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: 3596kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 69ms
memory: 3592kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 746ms
memory: 3552kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3524kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 812ms
memory: 3604kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 456ms
memory: 3584kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1101ms
memory: 3528kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 201ms
memory: 3532kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 602ms
memory: 3524kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 357ms
memory: 3600kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 325ms
memory: 3668kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 958ms
memory: 3596kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1111ms
memory: 3608kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1112ms
memory: 3612kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1111ms
memory: 3604kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed