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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#726424#8339. Rooted Treebeamishboys#AC ✓1101ms3700kbC++23654b2024-11-09 00:16:162024-11-09 00:16:17

Judging History

你现在查看的是最新测评结果

  • [2024-11-09 00:16:17]
  • 评测
  • 测评结果:AC
  • 用时:1101ms
  • 内存:3700kb
  • [2024-11-09 00:16:16]
  • 提交

answer

#include <iostream>
#include <vector>

using namespace std;
using ll = long long;
const ll mod = 1e9+9;
ll modPow(ll n, ll p) {
	ll b = n, o = 1;
	while (p) {
		if (p&1) o = (b*o)%mod;
		p/=2;
		b = (b*b)%mod;
	}
	return o;
}

ll inv(ll n) {
	return modPow(n, mod-2);
}

int main() {
	ll m, k; cin >> m >> k;
	ll dleaf = 0, dnode = 0;
	ll leafCnt = 1;
	ll nodeCnt = 0;
	for (ll i = 0; i < k; i++) {
		ll aleaf = (dleaf * inv(leafCnt))%mod;
		dnode = dnode + aleaf;
		dnode %= mod;

		dleaf = dleaf + m*(aleaf+1) - aleaf + mod;
		dleaf %= mod;
		leafCnt += m-1;
		nodeCnt++;
	}
	cout << (dleaf + dnode)%mod << endl;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3616kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

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

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 68ms
memory: 3700kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 739ms
memory: 3680kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 801ms
memory: 3560kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 452ms
memory: 3676kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1092ms
memory: 3672kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 199ms
memory: 3620kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 597ms
memory: 3628kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 354ms
memory: 3616kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 322ms
memory: 3660kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 944ms
memory: 3620kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1101ms
memory: 3632kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1100ms
memory: 3616kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1101ms
memory: 3632kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed