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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
#759441#9553. The HermitAzusidNyaAC ✓82ms38488kbC++171.8kb2024-11-18 08:28:492024-11-18 08:28:49

Judging History

你现在查看的是测评时间为 2024-11-18 08:28:49 的历史记录

  • [2024-11-18 19:52:24]
  • 自动重测本题所有获得100分的提交记录
  • 测评结果:AC
  • 用时:153ms
  • 内存:38528kb
  • [2024-11-18 19:43:48]
  • hack成功,自动添加数据
  • (/hack/1196)
  • [2024-11-18 08:28:49]
  • 评测
  • 测评结果:100
  • 用时:82ms
  • 内存:38488kb
  • [2024-11-18 08:28:49]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
#define eb emplace_back
#define mp make_pair
#define DEBUG
using namespace std;
using pii = pair<int, int>;
using piii = pair<int, pii>;
using piiii = pair<pii, pii>;
using i64 = long long;
using u64 = unsigned long long;
using u32 = unsigned int;
const int P = 998244353;const i64 inf = 0x3f3f3f3f3f3f3f3f;
namespace CombineMath{
	// const int P = ...;
	vector<int> jc;
	vector<int> inv;
	int ksm(int u, int v){
		int ret = 1;
		while(v){
			if(v & 1) ret = 1ll * ret * u % P;
			u = 1ll * u * u % P, v >>= 1;
		}
		return ret;
	}
	int prework(int n){
		jc.assign(n + 5, 0);
		inv.assign(n + 5, 0);
		jc[0] = 1, inv[0] = 1;
		for(int i = 1; i <= n; i ++)
			jc[i] = 1ll * jc[i - 1] * i % P;
		inv[n] = ksm(jc[n], P - 2);
		for(int i = n - 1; i >= 1; i --)
			inv[i] = 1ll * inv[i + 1] * (i + 1) % P;
		return 0;
	}
	int binom(int u, int v){
		if(u < 0 || v < 0) return 0;
		if(u < v) return 0;
		return 1ll * (1ll * jc[u] * inv[v] % P) * inv[u - v] % P;
	}
	int F(int u, int v){
		return binom(u + v - 1, v - 1);
	}
}using namespace CombineMath;
namespace azus{
	int n, m;
	int f[100005][25];
	int main(){
		cin >> m >> n;
		for(int i = 1; i <= m; i ++){
			f[i][1] ++;
			for(int j = i + i; j <= m; j += i){
				for(int k = 1; k <= 24; k ++){
					(f[j][k] += f[i][k - 1]) %= P;
				}
			}
		}
		int ans = 0;
		for(int i = 1; i <= m; i ++){
			for(int j = 1; j <= 24; j ++){
				int len = n - j;
				int x = m / i - 1;
				(ans += f[i][j] * binom(x, len) % P) %= P;
			}
		}
		cout << ((n * binom(m, n) % P) - ans + P) % P << "\n";
		return 0;
	}
}
signed main(){
#ifndef DEBUG
	ios::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
#endif
	int T = 1;
	CombineMath::prework(1000005);
	// cin >> T;
	while(T --)
		azus::main();
	return 0;
}

这程序好像有点Bug,我给组数据试试?

詳細信息

Test #1:

score: 100
Accepted
time: 8ms
memory: 18712kb

input:

4 3

output:

7

result:

ok 1 number(s): "7"

Test #2:

score: 0
Accepted
time: 8ms
memory: 18616kb

input:

11 4

output:

1187

result:

ok 1 number(s): "1187"

Test #3:

score: 0
Accepted
time: 72ms
memory: 38484kb

input:

100000 99999

output:

17356471

result:

ok 1 number(s): "17356471"

Test #4:

score: 0
Accepted
time: 14ms
memory: 20980kb

input:

11451 1919

output:

845616153

result:

ok 1 number(s): "845616153"

Test #5:

score: 0
Accepted
time: 76ms
memory: 38300kb

input:

99998 12345

output:

936396560

result:

ok 1 number(s): "936396560"

Test #6:

score: 0
Accepted
time: 72ms
memory: 38384kb

input:

100000 1

output:

0

result:

ok 1 number(s): "0"

Test #7:

score: 0
Accepted
time: 63ms
memory: 38344kb

input:

100000 15

output:

190067060

result:

ok 1 number(s): "190067060"

Test #8:

score: 0
Accepted
time: 8ms
memory: 18724kb

input:

10 3

output:

299

result:

ok 1 number(s): "299"

Test #9:

score: 0
Accepted
time: 5ms
memory: 18624kb

input:

10 4

output:

743

result:

ok 1 number(s): "743"

Test #10:

score: 0
Accepted
time: 11ms
memory: 18756kb

input:

10 5

output:

1129

result:

ok 1 number(s): "1129"

Test #11:

score: 0
Accepted
time: 7ms
memory: 18656kb

input:

15 6

output:

28006

result:

ok 1 number(s): "28006"

Test #12:

score: 0
Accepted
time: 11ms
memory: 18752kb

input:

15 7

output:

42035

result:

ok 1 number(s): "42035"

Test #13:

score: 0
Accepted
time: 7ms
memory: 18712kb

input:

123 45

output:

214851327

result:

ok 1 number(s): "214851327"

Test #14:

score: 0
Accepted
time: 8ms
memory: 19028kb

input:

998 244

output:

964050559

result:

ok 1 number(s): "964050559"

Test #15:

score: 0
Accepted
time: 7ms
memory: 19308kb

input:

1919 810

output:

379720338

result:

ok 1 number(s): "379720338"

Test #16:

score: 0
Accepted
time: 7ms
memory: 18916kb

input:

1048 576

output:

216543264

result:

ok 1 number(s): "216543264"

Test #17:

score: 0
Accepted
time: 7ms
memory: 19016kb

input:

999 777

output:

635548531

result:

ok 1 number(s): "635548531"

Test #18:

score: 0
Accepted
time: 77ms
memory: 38440kb

input:

99999 77777

output:

448144614

result:

ok 1 number(s): "448144614"

Test #19:

score: 0
Accepted
time: 25ms
memory: 25524kb

input:

34527 6545

output:

748108997

result:

ok 1 number(s): "748108997"

Test #20:

score: 0
Accepted
time: 13ms
memory: 21384kb

input:

12345 12

output:

777496209

result:

ok 1 number(s): "777496209"

Test #21:

score: 0
Accepted
time: 8ms
memory: 18584kb

input:

1 1

output:

0

result:

ok 1 number(s): "0"

Test #22:

score: 0
Accepted
time: 74ms
memory: 38436kb

input:

100000 10101

output:

855985819

result:

ok 1 number(s): "855985819"

Test #23:

score: 0
Accepted
time: 69ms
memory: 38452kb

input:

100000 91919

output:

92446940

result:

ok 1 number(s): "92446940"

Test #24:

score: 0
Accepted
time: 82ms
memory: 38412kb

input:

100000 77979

output:

106899398

result:

ok 1 number(s): "106899398"

Test #25:

score: 0
Accepted
time: 13ms
memory: 20812kb

input:

10000 11

output:

326411649

result:

ok 1 number(s): "326411649"

Test #26:

score: 0
Accepted
time: 68ms
memory: 38320kb

input:

100000 2

output:

15322970

result:

ok 1 number(s): "15322970"

Test #27:

score: 0
Accepted
time: 73ms
memory: 38348kb

input:

100000 3

output:

93355797

result:

ok 1 number(s): "93355797"

Test #28:

score: 0
Accepted
time: 72ms
memory: 38344kb

input:

100000 99998

output:

331850772

result:

ok 1 number(s): "331850772"

Test #29:

score: 0
Accepted
time: 68ms
memory: 38316kb

input:

100000 99996

output:

885066226

result:

ok 1 number(s): "885066226"

Test #30:

score: 0
Accepted
time: 11ms
memory: 21236kb

input:

13115 2964

output:

0

result:

ok 1 number(s): "0"

Test #31:

score: 0
Accepted
time: 72ms
memory: 38424kb

input:

100000 17

output:

425792977

result:

ok 1 number(s): "425792977"

Test #32:

score: 0
Accepted
time: 70ms
memory: 38416kb

input:

99991 16

output:

667323936

result:

ok 1 number(s): "667323936"

Test #33:

score: 0
Accepted
time: 78ms
memory: 38380kb

input:

99991 17

output:

627396741

result:

ok 1 number(s): "627396741"

Test #34:

score: 0
Accepted
time: 72ms
memory: 38412kb

input:

99991 18

output:

874158501

result:

ok 1 number(s): "874158501"

Test #35:

score: 0
Accepted
time: 67ms
memory: 38416kb

input:

100000 100000

output:

99999

result:

ok 1 number(s): "99999"

Test #36:

score: 0
Accepted
time: 63ms
memory: 37228kb

input:

94229 94229

output:

94228

result:

ok 1 number(s): "94228"

Test #37:

score: 0
Accepted
time: 63ms
memory: 37220kb

input:

94229 94223

output:

476599876

result:

ok 1 number(s): "476599876"

Test #38:

score: 0
Accepted
time: 9ms
memory: 18692kb

input:

2 1

output:

0

result:

ok 1 number(s): "0"

Test #39:

score: 0
Accepted
time: 4ms
memory: 18660kb

input:

2 2

output:

0

result:

ok 1 number(s): "0"

Test #40:

score: 0
Accepted
time: 7ms
memory: 18632kb

input:

3 1

output:

0

result:

ok 1 number(s): "0"

Test #41:

score: 0
Accepted
time: 11ms
memory: 18732kb

input:

3 2

output:

2

result:

ok 1 number(s): "2"

Test #42:

score: 0
Accepted
time: 11ms
memory: 18656kb

input:

3 3

output:

2

result:

ok 1 number(s): "2"

Test #43:

score: 0
Accepted
time: 7ms
memory: 18828kb

input:

9 2

output:

44

result:

ok 1 number(s): "44"

Test #44:

score: 0
Accepted
time: 7ms
memory: 18632kb

input:

9 3

output:

206

result:

ok 1 number(s): "206"

Test #45:

score: 0
Accepted
time: 7ms
memory: 18728kb

input:

9 4

output:

441

result:

ok 1 number(s): "441"

Test #46:

score: 0
Accepted
time: 11ms
memory: 18636kb

input:

9 7

output:

224

result:

ok 1 number(s): "224"

Test #47:

score: 0
Accepted
time: 52ms
memory: 32732kb

input:

70839 22229

output:

0

result:

ok 1 number(s): "0"

Test #48:

score: 0
Accepted
time: 45ms
memory: 31640kb

input:

65536 17

output:

698801006

result:

ok 1 number(s): "698801006"

Test #49:

score: 0
Accepted
time: 48ms
memory: 31664kb

input:

65535 17

output:

433312902

result:

ok 1 number(s): "433312902"

Test #50:

score: 0
Accepted
time: 71ms
memory: 38384kb

input:

99856 317

output:

932131332

result:

ok 1 number(s): "932131332"

Test #51:

score: 0
Accepted
time: 76ms
memory: 38364kb

input:

99856 318

output:

398997854

result:

ok 1 number(s): "398997854"

Test #52:

score: 0
Accepted
time: 73ms
memory: 38452kb

input:

99856 2

output:

984791559

result:

ok 1 number(s): "984791559"

Test #53:

score: 0
Accepted
time: 71ms
memory: 38488kb

input:

100000 50000

output:

309108799

result:

ok 1 number(s): "309108799"

Extra Test:

score: 0
Extra Test Passed