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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
#713912#8339. Rooted Treeshunhualin#AC ✓1116ms3728kbC++20789b2024-11-05 20:52:542024-11-05 20:52:55

Judging History

你现在查看的是最新测评结果

  • [2024-11-05 20:52:55]
  • 评测
  • 测评结果:AC
  • 用时:1116ms
  • 内存:3728kb
  • [2024-11-05 20:52:54]
  • 提交

answer

#include <bits/stdc++.h>
#define int long long
#define endl "\n"
const int mod = 1e9 + 9;
const int N = 1e5 + 50;
using namespace std;
int quickpow(int n, int m){
	int res = 1;
	while(m){
		if(m & 1){
			res = res * n % mod;
		}
		n = n * n % mod;
		m = m >> 1;
	}
	return res;
} 
void slove(){
	int m, k; cin >> m >> k;
	int s1 = m, s2 = m, s3 = m;
	for(int i = 2; i <= k; i++){
		int p = quickpow(s1, mod - 2);
		int ss1 = s1 + m - 1;
		int ss2 = s2 + (m - 1) * s2 % mod * p % mod + m;
		int ss3 = s3 + m + m * s2 % mod * p % mod;
		s1 = ss1 % mod;
		s2 = ss2 % mod;
		s3 = ss3 % mod; 
	}
	cout << s3 << endl;
}
signed main(){
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	int T = 1;
	//cin >> T;
	while(T--){
		slove();
	}
	return 0;
}



详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3728kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

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

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 69ms
memory: 3588kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 750ms
memory: 3648kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 812ms
memory: 3632kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 458ms
memory: 3644kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1109ms
memory: 3708kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 202ms
memory: 3628kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 605ms
memory: 3708kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 359ms
memory: 3580kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 322ms
memory: 3592kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 962ms
memory: 3592kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1116ms
memory: 3644kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1116ms
memory: 3580kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1112ms
memory: 3624kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed