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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
#825029#9778. Brotatoucup-team5318#AC ✓390ms641444kbC++14793b2024-12-21 17:03:102024-12-21 17:03:10

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你现在查看的是最新测评结果

  • [2024-12-21 17:03:10]
  • 评测
  • 测评结果：AC
  • 用时：390ms
  • 内存：641444kb
查看
  • [2024-12-21 17:03:10]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
const int N=1e5+5, M=405;
ld f[N], g[N], ct[N], h[N];
ld d[N][M];
int main(){
//	freopen(".in", "r", stdin);
//	freopen(".out", "w", stdout);
	int n, k;
	cin >> n >> k;
	//#
	k=min(k, M-1);
	ld p;
	cin >> p;
	f[0]=g[0]=0;
	for(int i=1; i<=n; ++i){
		f[i]=(p*g[i-1]+1)/(1-p);
		g[i]=g[i-1]+f[i];
//		cerr << f[i] << '\n';
	}
	for(int i=n; i>=1; --i){
		for(int j=0; j<=k; ++j){
			d[i][j]=(p*g[i-1]+(1-p)*d[i+1][j]+1)/(1-p);
			if(j) d[i][j]=min(d[i][j], p*d[i][j-1]+(1-p)*d[i+1][j]+1);
		}
	}
	ld ans=d[1][k];
	printf("%.15LF\n", ans);
	return 0;
}
/*
100000 10
0.0002
*/
/*
fi=p (gi-1+fi) + 1

(1-p)fi=p fi-1+1
fi=(p gi-1 + 1)/(1-p)

100000 1000
0.0002
*/
源文件, 语言: C++14

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: 1ms
memory: 6028kb

input:

5 0
0.5

output:

62.000000000000000

result:

ok found '62.000000000', expected '62.000000000', error '0.000000000'

Test #2:

score: 0
Accepted
time: 1ms
memory: 7984kb

input:

5 1
0.5

output:

47.000000000000000

result:

ok found '47.000000000', expected '47.000000000', error '0.000000000'

Test #3:

score: 0
Accepted
time: 0ms
memory: 70624kb

input:

10000 0
0.002

output:

247489700298.253712922334671

result:

ok found '247489700298.253723145', expected '247489700298.253692627', error '0.000000000'

Test #4:

score: 0
Accepted
time: 32ms
memory: 475696kb

input:

100000 10
0.0002

output:

38767507133.232287958264351

result:

ok found '38767507133.232284546', expected '38767507133.232215881', error '0.000000000'

Test #5:

score: 0
Accepted
time: 16ms
memory: 500268kb

input:

100000 0
0.0002

output:

2430683127170.380880594253540

result:

ok found '2430683127170.380859375', expected '2430683127170.376953125', error '0.000000000'

Test #6:

score: 0
Accepted
time: 19ms
memory: 536092kb

input:

100000 20
0.0002

output:

801073272.231682432815433

result:

ok found '801073272.231682420', expected '801073272.231680870', error '0.000000000'

Test #7:

score: 0
Accepted
time: 40ms
memory: 554076kb

input:

100000 40
0.0002

output:

478148.718426307652891

result:

ok found '478148.718426308', expected '478148.718426307', error '0.000000000'

Test #8:

score: 0
Accepted
time: 19ms
memory: 520032kb

input:

99995 4
0.0001

output:

38976542.868175869196421

result:

ok found '38976542.868175872', expected '38976542.868175834', error '0.000000000'

Test #9:

score: 0
Accepted
time: 15ms
memory: 529712kb

input:

99995 10
0.0001

output:

3549184.597712020421341

result:

ok found '3549184.597712020', expected '3549184.597712017', error '0.000000000'

Test #10:

score: 0
Accepted
time: 0ms
memory: 532900kb

input:

99995 16
0.0001

output:

399507.470556742275477

result:

ok found '399507.470556742', expected '399507.470556742', error '0.000000000'

Test #11:

score: 0
Accepted
time: 15ms
memory: 527576kb

input:

99990 8
0.0001

output:

7773463.947930728234951

result:

ok found '7773463.947930728', expected '7773463.947930722', error '0.000000000'

Test #12:

score: 0
Accepted
time: 3ms
memory: 526840kb

input:

99990 10
0.0001

output:

3547428.945472300296842

result:

ok found '3547428.945472301', expected '3547428.945472297', error '0.000000000'

Test #13:

score: 0
Accepted
time: 16ms
memory: 528352kb

input:

99990 12
0.0001

output:

1647102.020434396927499

result:

ok found '1647102.020434397', expected '1647102.020434395', error '0.000000000'

Test #14:

score: 0
Accepted
time: 0ms
memory: 111376kb

input:

16664 1
0.0012

output:

257920044630.860531896352768

result:

ok found '257920044630.860534668', expected '257920044630.860534668', error '0.000000000'

Test #15:

score: 0
Accepted
time: 0ms
memory: 111136kb

input:

16664 21
0.0012

output:

92190688.544415014315746

result:

ok found '92190688.544415012', expected '92190688.544415027', error '0.000000000'

Test #16:

score: 0
Accepted
time: 3ms
memory: 112528kb

input:

16664 41
0.0012

output:

59865.091785919909288

result:

ok found '59865.091785920', expected '59865.091785920', error '0.000000000'

Test #17:

score: 0
Accepted
time: 0ms
memory: 111280kb

input:

16659 5
0.0003

output:

63366.264406954774440

result:

ok found '63366.264406955', expected '63366.264406955', error '0.000000000'

Test #18:

score: 0
Accepted
time: 0ms
memory: 112288kb

input:

16659 11
0.0003

output:

18120.911863542532142

result:

ok found '18120.911863543', expected '18120.911863543', error '0.000000000'

Test #19:

score: 0
Accepted
time: 8ms
memory: 111252kb

input:

16659 17
0.0003

output:

16666.555451967405572

result:

ok found '16666.555451967', expected '16666.555451967', error '0.000000000'

Test #20:

score: 0
Accepted
time: 3ms
memory: 112248kb

input:

16654 9
0.0001

output:

16656.079416575626295

result:

ok found '16656.079416576', expected '16656.079416576', error '0.000000000'

Test #21:

score: 0
Accepted
time: 0ms
memory: 110336kb

input:

16654 11
0.0001

output:

16655.674122172401402

result:

ok found '16655.674122172', expected '16655.674122172', error '0.000000000'

Test #22:

score: 0
Accepted
time: 0ms
memory: 111292kb

input:

16654 13
0.0001

output:

16655.665695362667108

result:

ok found '16655.665695363', expected '16655.665695363', error '0.000000000'

Test #23:

score: 0
Accepted
time: 0ms
memory: 24408kb

input:

2774 2
0.0072

output:

28951389306.987512705847621

result:

ok found '28951389306.987514496', expected '28951389306.987514496', error '0.000000000'

Test #24:

score: 0
Accepted
time: 3ms
memory: 25008kb

input:

2774 22
0.0072

output:

11312241.450653941592464

result:

ok found '11312241.450653942', expected '11312241.450653942', error '0.000000000'

Test #25:

score: 0
Accepted
time: 0ms
memory: 24728kb

input:

2774 42
0.0072

output:

8222.415108508618236

result:

ok found '8222.415108509', expected '8222.415108509', error '0.000000000'

Test #26:

score: 0
Accepted
time: 0ms
memory: 23148kb

input:

2769 6
0.0021

output:

13600.582355731611549

result:

ok found '13600.582355732', expected '13600.582355732', error '0.000000000'

Test #27:

score: 0
Accepted
time: 0ms
memory: 24480kb

input:

2769 12
0.0021

output:

3239.549978211126328

result:

ok found '3239.549978211', expected '3239.549978211', error '0.000000000'

Test #28:

score: 0
Accepted
time: 0ms
memory: 23044kb

input:

2769 18
0.0021

output:

2776.628194875240416

result:

ok found '2776.628194875', expected '2776.628194875', error '0.000000000'

Test #29:

score: 0
Accepted
time: 2ms
memory: 24296kb

input:

2764 10
0.0007

output:

2765.987073955086379

result:

ok found '2765.987073955', expected '2765.987073955', error '0.000000000'

Test #30:

score: 0
Accepted
time: 0ms
memory: 24332kb

input:

2764 12
0.0007

output:

2765.937362849971975

result:

ok found '2765.937362850', expected '2765.937362850', error '0.000000000'

Test #31:

score: 0
Accepted
time: 0ms
memory: 24328kb

input:

2764 14
0.0007

output:

2765.936176703472706

result:

ok found '2765.936176703', expected '2765.936176704', error '0.000000000'

Test #32:

score: 0
Accepted
time: 390ms
memory: 641444kb

input:

100000 1000000000
0.0001

output:

100010.001000100053595

result:

ok found '100010.001000100', expected '100010.001000100', error '0.000000000'

Test #33:

score: 0
Accepted
time: 1ms
memory: 6040kb

input:

1 1000000000
0.5

output:

2.000000000000000

result:

ok found '2.000000000', expected '2.000000000', error '0.000000000'

Test #34:

score: 0
Accepted
time: 1ms
memory: 8188kb

input:

50 50
0.25

output:

66.734187333704528

result:

ok found '66.734187334', expected '66.734187334', error '0.000000000'

Test #35:

score: 0
Accepted
time: 1ms
memory: 8116kb

input:

40 100
0.5

output:

788.633123966272321

result:

ok found '788.633123966', expected '788.633123966', error '0.000000000'

Test #36:

score: 0
Accepted
time: 0ms
memory: 8276kb

input:

40 160
0.5

output:

80.000000255247920

result:

ok found '80.000000255', expected '80.000000255', error '0.000000000'

Test #37:

score: 0
Accepted
time: 0ms
memory: 6216kb

input:

40 162
0.5

output:

80.000000098233742

result:

ok found '80.000000098', expected '80.000000098', error '0.000000000'

Test #38:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

40 1000000000
0.5

output:

80.000000000000000

result:

ok found '80.000000000', expected '80.000000000', error '0.000000000'

Test #39:

score: 0
Accepted
time: 1ms
memory: 6188kb

input:

40 0
0.5000

output:

2199023255550.000000000000000

result:

ok found '2199023255550.000000000', expected '2199023255550.000000000', error '0.000000000'

Test #40:

score: 0
Accepted
time: 1ms
memory: 6132kb

input:

40 1
0.5000

output:

1649267441663.000000000000000

result:

ok found '1649267441663.000000000', expected '1649267441663.000000000', error '0.000000000'

Test #41:

score: 0
Accepted
time: 1ms
memory: 6140kb

input:

40 2
0.5000

output:

1236950581248.250000000000000

result:

ok found '1236950581248.250000000', expected '1236950581248.250000000', error '0.000000000'

Test #42:

score: 0
Accepted
time: 1ms
memory: 8056kb

input:

40 3
0.5000

output:

962072674305.000000000000000

result:

ok found '962072674305.000000000', expected '962072674305.000000000', error '0.000000000'

Test #43:

score: 0
Accepted
time: 1ms
memory: 6176kb

input:

40 4
0.5000

output:

738734374914.218750000000000

result:

ok found '738734374914.218750000', expected '738734374914.218750000', error '0.000000000'

Test #44:

score: 0
Accepted
time: 0ms
memory: 8184kb

input:

40 5
0.5000

output:

575525617666.953125000000000

result:

ok found '575525617666.953125000', expected '575525617666.953125000', error '0.000000000'

Test #45:

score: 0
Accepted
time: 1ms
memory: 8232kb

input:

40 10
0.5000

output:

173409304583.132568359375000

result:

ok found '173409304583.132568359', expected '173409304583.132568359', error '0.000000000'

Test #46:

score: 0
Accepted
time: 1ms
memory: 8192kb

input:

40 15
0.5000

output:

55390502923.073508262634277

result:

ok found '55390502923.073509216', expected '55390502923.073509216', error '0.000000000'

Test #47:

score: 0
Accepted
time: 1ms
memory: 6148kb

input:

40 20
0.5000

output:

18180087821.747404500842094

result:

ok found '18180087821.747406006', expected '18180087821.747406006', error '0.000000000'

Test #48:

score: 0
Accepted
time: 0ms
memory: 6200kb

input:

40 25
0.5000

output:

5963269457.318783601745963

result:

ok found '5963269457.318783760', expected '5963269457.318783760', error '0.000000000'

Test #49:

score: 0
Accepted
time: 1ms
memory: 8072kb

input:

40 30
0.5000

output:

2008652291.209798980969936

result:

ok found '2008652291.209799051', expected '2008652291.209799051', error '0.000000000'

Test #50:

score: 0
Accepted
time: 1ms
memory: 5956kb

input:

40 35
0.5000

output:

676323760.766804063285235

result:

ok found '676323760.766804099', expected '676323760.766804099', error '0.000000000'

Test #51:

score: 0
Accepted
time: 1ms
memory: 8072kb

input:

40 40
0.5000

output:

231036317.117801572981989

result:

ok found '231036317.117801577', expected '231036317.117801577', error '0.000000000'

Test #52:

score: 0
Accepted
time: 1ms
memory: 6060kb

input:

40 45
0.5000

output:

79224360.245689896939439

result:

ok found '79224360.245689899', expected '79224360.245689899', error '0.000000000'

Test #53:

score: 0
Accepted
time: 0ms
memory: 6056kb

input:

40 50
0.5000

output:

27134304.850833610878908

result:

ok found '27134304.850833610', expected '27134304.850833610', error '0.000000000'

Test #54:

score: 0
Accepted
time: 1ms
memory: 5872kb

input:

2 1
0.0001

output:

2.000200030004001

result:

ok found '2.000200030', expected '2.000200030', error '0.000000000'

Test #55:

score: 0
Accepted
time: 1ms
memory: 7836kb

input:

2 0
0.0001

output:

2.000300040005001

result:

ok found '2.000300040', expected '2.000300040', error '0.000000000'

Test #56:

score: 0
Accepted
time: 1ms
memory: 5880kb

input:

2 2
0.0001

output:

2.000200020003000

result:

ok found '2.000200020', expected '2.000200020', error '0.000000000'

Test #57:

score: 0
Accepted
time: 1ms
memory: 7900kb

input:

2 3
0.0001

output:

2.000200020002000

result:

ok found '2.000200020', expected '2.000200020', error '0.000000000'

Test #58:

score: 0
Accepted
time: 55ms
memory: 568772kb

input:

100000 60
0.0002

output:

100020.274838305049890

result:

ok found '100020.274838305', expected '100020.274838305', error '0.000000000'

Test #59:

score: 0
Accepted
time: 68ms
memory: 584412kb

input:

100000 80
0.0002

output:

100020.004000800250921

result:

ok found '100020.004000800', expected '100020.004000800', error '0.000000000'

Test #60:

score: 0
Accepted
time: 60ms
memory: 602088kb

input:

100000 100
0.0002

output:

100020.004000800248363

result:

ok found '100020.004000800', expected '100020.004000800', error '0.000000000'

Test #61:

score: 0
Accepted
time: 107ms
memory: 618652kb

input:

100000 120
0.0002

output:

100020.004000800248363

result:

ok found '100020.004000800', expected '100020.004000800', error '0.000000000'

Test #62:

score: 0
Accepted
time: 115ms
memory: 633620kb

input:

100000 140
0.0002

output:

100020.004000800248363

result:

ok found '100020.004000800', expected '100020.004000800', error '0.000000000'

Test #63:

score: 0
Accepted
time: 87ms
memory: 639776kb

input:

100000 180
0.0002

output:

100020.004000800248363

result:

ok found '100020.004000800', expected '100020.004000800', error '0.000000000'

Test #64:

score: 0
Accepted
time: 52ms
memory: 564704kb

input:

100000 55
0.0002

output:

100070.850328203299320

result:

ok found '100070.850328203', expected '100070.850328203', error '0.000000000'

Test #65:

score: 0
Accepted
time: 40ms
memory: 562336kb

input:

100000 50
0.0002

output:

103207.684193091291576

result:

ok found '103207.684193091', expected '103207.684193091', error '0.000000000'

Extra Test:

score: 0
Extra Test Passed
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