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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
#601167#8339. Rooted Treeast123#AC ✓1175ms3692kbC++141.1kb2024-09-29 21:11:362024-09-29 21:11:37

Judging History

你现在查看的是最新测评结果

  • [2024-09-29 21:11:37]
  • 评测
  • 测评结果:AC
  • 用时:1175ms
  • 内存:3692kb
  • [2024-09-29 21:11:36]
  • 提交

answer

#include <bits/stdc++.h>
#define pii pair<long long,long long>
#define mp make_pair
using namespace std;
typedef long long ll;

template<typename T>inline void read(T &x) {
	x = 0;
	int f = 1;
	char c = getchar();
	while (c < '0' || c > '9') {
		if (c == '-')
			f = -1;
		c = getchar();
	}
	while (c >= '0' && c <= '9') {
		x = x * 10 + c - '0';
		c = getchar();
	}
	x *= f;
}

template<typename T>inline void write(T x) {
	if (x < 0) {
		putchar('-');
		x = -x;
	}
	if (x > 9) {
		write(x / 10);
	}
	putchar(x % 10 + '0');
}
const int mod = 1e9 + 9;
ll leaf = 1, leafd = 0, total = 0;
int s = 0;

ll fpow(int x, int y) {
	int res = 1;
	for (; y; y >>= 1, x = 1ll * x * x % mod)
		if (y & 1)
			res = 1ll * res * x % mod;
	return res;
}

int main() {
	int m = 100, k = 1e7;
	cin >> m >> k;
	for (int i = 1; i <= k; i++) {
		total = (total + (leafd + 1) * m) % mod;
		leafd = (leafd * (leaf - 1)) + (leafd + 1) * m;
		leafd %= mod;
		leaf += m - 1;
		leafd = leafd * fpow(leaf, mod - 2) % mod;
	}
	cout << total;
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3564kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3572kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 73ms
memory: 3664kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 789ms
memory: 3688kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

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

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 859ms
memory: 3608kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 482ms
memory: 3588kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1166ms
memory: 3504kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 212ms
memory: 3520kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 637ms
memory: 3552kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 377ms
memory: 3688kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 343ms
memory: 3516kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1012ms
memory: 3692kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1175ms
memory: 3508kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1175ms
memory: 3552kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1175ms
memory: 3528kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed