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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#721753#8339. Rooted TreeNyanya_#AC ✓1160ms3688kbC++20623b2024-11-07 16:45:392024-11-07 16:45:40

Judging History

This is the latest submission verdict.

  • [2024-11-07 16:45:40]
  • Judged
  • Verdict: AC
  • Time: 1160ms
  • Memory: 3688kb
  • [2024-11-07 16:45:39]
  • Submitted

answer

#include <bits/stdc++.h>
using namespace std;
const int MOD = 1e9 + 9;
int main() {
  int m, k;
  cin >> m >> k;
  long long ans = 0, siz = 1, sum = 0;
  auto Pow = [&](long long x, long long y) -> long long {
    long long ans = 1;
    while (y) {
      if (y & 1)
        ans = ans * x % MOD;
      x = x * x % MOD;
      y >>= 1;
    }
    return ans;
  };
  for (int i = 1; i <= k; ++i) {
    long long inv = Pow(siz, MOD - 2);
    ans = (ans + m * sum % MOD * inv % MOD + m) % MOD;
    sum = (m + sum + sum * inv % MOD * (m - 1) % MOD) % MOD;
    siz = (siz + m - 1) % MOD;
  }
  cout << ans;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3532kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 72ms
memory: 3688kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 775ms
memory: 3624kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3540kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 844ms
memory: 3612kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 473ms
memory: 3616kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1151ms
memory: 3604kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 209ms
memory: 3616kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 629ms
memory: 3668kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 373ms
memory: 3532kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 339ms
memory: 3488kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1000ms
memory: 3536kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1160ms
memory: 3532kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1160ms
memory: 3600kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1160ms
memory: 3540kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed