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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#89072#2303. Lucky ShirtIrisLiAC ✓363ms3676kbC++14454b2023-03-18 18:43:242023-03-18 18:43:25

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-03-18 18:43:25]
  • 评测
  • 测评结果：AC
  • 用时：363ms
  • 内存：3676kb
查看
  • [2023-03-18 18:43:24]
  • 提交

answer

#include<iostream>
#include<stdio.h>
using namespace std;
typedef long double lb;
int n,k,i;
lb ksm(lb x,int kk){
	lb res=1.0;
	while(kk){
		if(kk&1) res*=x;
		x*=x;
		kk>>=1;
	}
	return res;
}
int main(){
	scanf("%d%d%d",&n,&i,&k);
	lb ans=i*1.0*ksm((i-1.0)/(1.0*n),k);
	for(int a=i;a<=n;a++){
		ans+=(a+1.0)/2.0*(ksm(1.0*a/(1.0*n),k)-ksm((a-1.0)/(1.0*n),k));
	}
	printf("%.7Lf\n",ans);
	return 0;
}
/*
3 2 2
5 1 1
10 7 100
*/
Source code, Language: C++14

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3648kb

input:

1000000 1000000 1000000

output:

683939.9446709

result:

ok found '683939.9446709', expected '683939.9446710', error '0.0000000'

Test #2:

score: 0
Accepted
time: 2ms
memory: 3476kb

input:

1000000 1000000 1037

output:

999481.7690086

result:

ok found '999481.7690086', expected '999481.7690090', error '0.0000000'

Test #3:

score: 0
Accepted
time: 288ms
memory: 3500kb

input:

1000000 12 1000000

output:

500000.2090121

result:

ok found '500000.2090121', expected '500000.2090120', error '0.0000000'

Test #4:

score: 0
Accepted
time: 20ms
memory: 3528kb

input:

1000000 237 85

output:

494186.7965081

result:

ok found '494186.7965081', expected '494186.7965080', error '0.0000000'

Test #5:

score: 0
Accepted
time: 2ms
memory: 3632kb

input:

106 45 1000000

output:

53.5000000

result:

ok found '53.5000000', expected '53.5000000', error '0.0000000'

Test #6:

score: 0
Accepted
time: 2ms
memory: 3648kb

input:

50 37 100

output:

25.4240932

result:

ok found '25.4240932', expected '25.4240932', error '0.0000000'

Test #7:

score: 0
Accepted
time: 5ms
memory: 3508kb

input:

21686 3046 995802

output:

10843.5000000

result:

ok found '10843.5000000', expected '10843.5000000', error '0.0000000'

Test #8:

score: 0
Accepted
time: 13ms
memory: 3644kb

input:

39229 8742 997007

output:

19615.0000000

result:

ok found '19615.0000000', expected '19615.0000000', error '0.0000000'

Test #9:

score: 0
Accepted
time: 37ms
memory: 3632kb

input:

148554 16724 999818

output:

74277.4994022

result:

ok found '74277.4994022', expected '74277.4994022', error '0.0000000'

Test #10:

score: 0
Accepted
time: 5ms
memory: 3444kb

input:

80456 71487 995120

output:

40228.4999979

result:

ok found '40228.4999979', expected '40228.4999979', error '0.0000000'

Test #11:

score: 0
Accepted
time: 31ms
memory: 3672kb

input:

117463 21766 997364

output:

58731.9998973

result:

ok found '58731.9998973', expected '58731.9998973', error '0.0000000'

Test #12:

score: 0
Accepted
time: 287ms
memory: 3512kb

input:

999503 76758 307028

output:

499750.6095026

result:

ok found '499750.6095026', expected '499750.6095200', error '0.0000000'

Test #13:

score: 0
Accepted
time: 7ms
memory: 3624kb

input:

994858 683723 5182

output:

497333.7766014

result:

ok found '497333.7766014', expected '497333.7766010', error '0.0000000'

Test #14:

score: 0
Accepted
time: 363ms
memory: 3544kb

input:

997293 36211 244780

output:

498645.2026706

result:

ok found '498645.2026706', expected '498645.2026710', error '0.0000000'

Test #15:

score: 0
Accepted
time: 244ms
memory: 3644kb

input:

991863 65853 526084

output:

495931.2853197

result:

ok found '495931.2853197', expected '495931.2853200', error '0.0000000'

Test #16:

score: 0
Accepted
time: 63ms
memory: 3504kb

input:

994039 753788 273551

output:

497018.4216376

result:

ok found '497018.4216376', expected '497018.4216380', error '0.0000000'

Test #17:

score: 0
Accepted
time: 12ms
memory: 3644kb

input:

958204 885361 135247

output:

479099.2017247

result:

ok found '479099.2017247', expected '479099.2017250', error '0.0000000'

Test #18:

score: 0
Accepted
time: 71ms
memory: 3544kb

input:

297436 61097 444330

output:

148718.3552532

result:

ok found '148718.3552532', expected '148718.3552530', error '0.0000000'

Test #19:

score: 0
Accepted
time: 166ms
memory: 3504kb

input:

768783 189461 884754

output:

384391.7686132

result:

ok found '384391.7686132', expected '384391.7686130', error '0.0000000'

Test #20:

score: 0
Accepted
time: 8ms
memory: 3448kb

input:

435555 413369 655561

output:

217777.8573340

result:

ok found '217777.8573340', expected '217777.8573340', error '0.0000000'

Test #21:

score: 0
Accepted
time: 5ms
memory: 3480kb

input:

122448 112932 844422

output:

61224.4994879

result:

ok found '61224.4994879', expected '61224.4994937', error '0.0000000'

Test #22:

score: 0
Accepted
time: 14ms
memory: 3528kb

input:

896568 62973 576

output:

447507.8279628

result:

ok found '447507.8279628', expected '447507.8279630', error '0.0000000'

Test #23:

score: 0
Accepted
time: 11ms
memory: 3676kb

input:

708723 316081 882

output:

353960.9345461

result:

ok found '353960.9345461', expected '353960.9345460', error '0.0000000'

Test #24:

score: 0
Accepted
time: 2ms
memory: 3536kb

input:

469986 288497 752

output:

234681.6742361

result:

ok found '234681.6742361', expected '234681.6742360', error '0.0000000'

Test #25:

score: 0
Accepted
time: 5ms
memory: 3480kb

input:

559630 106765 24

output:

268623.1499982

result:

ok found '268623.1499982', expected '268623.1499980', error '0.0000000'

Test #26:

score: 0
Accepted
time: 2ms
memory: 3460kb

input:

917620 902513 679

output:

458141.7778093

result:

ok found '458141.7778093', expected '458141.7778090', error '0.0000000'

Test #27:

score: 0
Accepted
time: 21ms
memory: 3676kb

input:

55994 5 897051

output:

27997.4999972

result:

ok found '27997.4999972', expected '27997.4999999', error '0.0000000'

Test #28:

score: 0
Accepted
time: 190ms
memory: 3476kb

input:

561712 11 276799

output:

280855.7148970

result:

ok found '280855.7148970', expected '280855.7148970', error '0.0000000'

Test #29:

score: 0
Accepted
time: 56ms
memory: 3676kb

input:

144541 4 482923

output:

72270.9816514

result:

ok found '72270.9816514', expected '72270.9816514', error '0.0000000'

Test #30:

score: 0
Accepted
time: 256ms
memory: 3540kb

input:

775447 6 189129

output:

387722.1898025

result:

ok found '387722.1898025', expected '387722.1898110', error '0.0000000'

Test #31:

score: 0
Accepted
time: 182ms
memory: 3504kb

input:

473744 1 257880

output:

236871.8088980

result:

ok found '236871.8088980', expected '236871.8088980', error '0.0000000'

Test #32:

score: 0
Accepted
time: 4ms
memory: 3464kb

input:

146665 231 17

output:

69259.2222174

result:

ok found '69259.2222174', expected '69259.2222174', error '0.0000000'

Test #33:

score: 0
Accepted
time: 2ms
memory: 3500kb

input:

182820 164 21

output:

87255.7499952

result:

ok found '87255.7499952', expected '87255.7499952', error '0.0000000'

Test #34:

score: 0
Accepted
time: 3ms
memory: 3432kb

input:

57701 34 58

output:

28362.2584327

result:

ok found '28362.2584327', expected '28362.2584327', error '0.0000000'

Test #35:

score: 0
Accepted
time: 10ms
memory: 3448kb

input:

688027 94 69

output:

339099.7714244

result:

ok found '339099.7714244', expected '339099.7714240', error '0.0000000'

Test #36:

score: 0
Accepted
time: 11ms
memory: 3644kb

input:

686925 88 73

output:

338821.8648604

result:

ok found '338821.8648604', expected '338821.8648600', error '0.0000000'

Test #37:

score: 0
Accepted
time: 2ms
memory: 3512kb

input:

13 13 553768

output:

7.0000000

result:

ok found '7.0000000', expected '7.0000000', error '0.0000000'

Test #38:

score: 0
Accepted
time: 2ms
memory: 3476kb

input:

59 31 791280

output:

30.0000000

result:

ok found '30.0000000', expected '30.0000000', error '0.0000000'

Test #39:

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

input:

2 1 356578

output:

1.5000000

result:

ok found '1.5000000', expected '1.5000000', error '0.0000000'

Test #40:

score: 0
Accepted
time: 1ms
memory: 3472kb

input:

60 35 892955

output:

30.5000000

result:

ok found '30.5000000', expected '30.5000000', error '0.0000000'

Test #41:

score: 0
Accepted
time: 2ms
memory: 3524kb

input:

56 16 895986

output:

28.5000000

result:

ok found '28.5000000', expected '28.5000000', error '0.0000000'

Test #42:

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

input:

10 6 78

output:

5.4998651

result:

ok found '5.4998651', expected '5.4998651', error '0.0000000'

Test #43:

score: 0
Accepted
time: 2ms
memory: 3476kb

input:

15 13 60

output:

7.9919510

result:

ok found '7.9919510', expected '7.9919510', error '0.0000000'

Test #44:

score: 0
Accepted
time: 1ms
memory: 3536kb

input:

29 26 53

output:

14.9140838

result:

ok found '14.9140838', expected '14.9140838', error '0.0000000'

Test #45:

score: 0
Accepted
time: 2ms
memory: 3508kb

input:

45 20 8

output:

20.7535266

result:

ok found '20.7535266', expected '20.7535266', error '0.0000000'

Test #46:

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

input:

31 11 20

output:

15.4851814

result:

ok found '15.4851814', expected '15.4851814', error '0.0000000'

Test #47:

score: 0
Accepted
time: 2ms
memory: 3648kb

input:

1 1 55

output:

1.0000000

result:

ok found '1.0000000', expected '1.0000000', error '0.0000000'
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