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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#427238#8774. Manhattan Walkucup-team3282#AC ✓13ms12216kbC++20731b2024-06-01 11:13:562024-06-01 11:13:56

Judging History

你现在查看的是最新测评结果

  • [2024-06-01 11:13:56]
  • 评测
  • 测评结果:AC
  • 用时:13ms
  • 内存:12216kb
  • [2024-06-01 11:13:56]
  • 提交

answer

#include<iostream>
#include<algorithm>
#include<cstring>
#include<cstdio>
using namespace std;
double dp[1050][1050];
int n,m;double p;
double eps=1e-9;
double mix(double t0,double t1){
    if(t0>t1)swap(t0,t1);
    double ret=0;
    ret+=t0/2;
    double dlt=t1-t0;
    if(dlt>=p)ret+=(p+t0)/2;
    else{
        ret+=(t0+dlt/2)*(dlt)/(2*p)+(t1)*(p-dlt)/(2*p);
    }
    return ret;
}
int main(){
    cin>>n>>m>>p;
    for(int i=2;i<=n;i++){
        dp[i][1]=p/4.0*(i-1);
    }
    for(int i=2;i<=m;i++){
        dp[1][i]=p/4.0*(i-1);
    }
    for(int i=2;i<=n;i++){
        for(int j=2;j<=m;j++){
            dp[i][j]=mix(dp[i-1][j],dp[i][j-1]);
        }
    }
    printf("%.8lf\n",dp[n][m]);
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3836kb

input:

2 3 8

output:

2.87500000

result:

ok found '2.8750000', expected '2.8750000', error '0.0000000'

Test #2:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

5 5 5

output:

2.43223387

result:

ok found '2.4322339', expected '2.4322339', error '0.0000000'

Test #3:

score: 0
Accepted
time: 0ms
memory: 3956kb

input:

1 1 1

output:

0.00000000

result:

ok found '0.0000000', expected '0.0000000', error '-0.0000000'

Test #4:

score: 0
Accepted
time: 12ms
memory: 12212kb

input:

1000 1000 1000000000

output:

1782317138.80837655

result:

ok found '1782317138.8083766', expected '1782317138.8083761', error '0.0000000'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3948kb

input:

1 4 5

output:

3.75000000

result:

ok found '3.7500000', expected '3.7500000', error '0.0000000'

Test #6:

score: 0
Accepted
time: 0ms
memory: 4016kb

input:

4 1 5

output:

3.75000000

result:

ok found '3.7500000', expected '3.7500000', error '0.0000000'

Test #7:

score: 0
Accepted
time: 0ms
memory: 3948kb

input:

1 1 1000000000

output:

0.00000000

result:

ok found '0.0000000', expected '0.0000000', error '-0.0000000'

Test #8:

score: 0
Accepted
time: 0ms
memory: 3952kb

input:

1 2 1000000000

output:

250000000.00000000

result:

ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'

Test #9:

score: 0
Accepted
time: 0ms
memory: 3948kb

input:

2 1 1000000000

output:

250000000.00000000

result:

ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'

Test #10:

score: 0
Accepted
time: 0ms
memory: 3828kb

input:

1 2 1

output:

0.25000000

result:

ok found '0.2500000', expected '0.2500000', error '0.0000000'

Test #11:

score: 0
Accepted
time: 0ms
memory: 3956kb

input:

2 1 1

output:

0.25000000

result:

ok found '0.2500000', expected '0.2500000', error '0.0000000'

Test #12:

score: 0
Accepted
time: 0ms
memory: 4016kb

input:

1 10 3

output:

6.75000000

result:

ok found '6.7500000', expected '6.7500000', error '0.0000000'

Test #13:

score: 0
Accepted
time: 1ms
memory: 5900kb

input:

10 1 3

output:

6.75000000

result:

ok found '6.7500000', expected '6.7500000', error '0.0000000'

Test #14:

score: 0
Accepted
time: 11ms
memory: 11940kb

input:

997 993 998244353

output:

1779941051.34616303

result:

ok found '1779941051.3461630', expected '1779941051.3461628', error '0.0000000'

Test #15:

score: 0
Accepted
time: 6ms
memory: 11540kb

input:

988 313 886183312

output:

78753022570.48333740

result:

ok found '78753022570.4833374', expected '78753022570.4833527', error '0.0000000'

Test #16:

score: 0
Accepted
time: 4ms
memory: 8972kb

input:

583 286 322190846

output:

8636356976.84371567

result:

ok found '8636356976.8437157', expected '8636356976.8437138', error '0.0000000'

Test #17:

score: 0
Accepted
time: 4ms
memory: 12216kb

input:

892 468 494964816

output:

17125998682.72923851

result:

ok found '17125998682.7292385', expected '17125998682.7292328', error '0.0000000'

Test #18:

score: 0
Accepted
time: 1ms
memory: 4032kb

input:

26 882 386682745

output:

78231677700.75039673

result:

ok found '78231677700.7503967', expected '78231677700.7504883', error '0.0000000'

Test #19:

score: 0
Accepted
time: 13ms
memory: 11492kb

input:

867 926 422131798

output:

945100500.39910769

result:

ok found '945100500.3991077', expected '945100500.3991071', error '0.0000000'

Test #20:

score: 0
Accepted
time: 1ms
memory: 5952kb

input:

37 68 19

output:

62.28445988

result:

ok found '62.2844599', expected '62.2844599', error '0.0000000'

Test #21:

score: 0
Accepted
time: 1ms
memory: 5828kb

input:

23 90 80

output:

860.05069874

result:

ok found '860.0506987', expected '860.0506987', error '0.0000000'

Test #22:

score: 0
Accepted
time: 0ms
memory: 4128kb

input:

43 55 85

output:

118.38926797

result:

ok found '118.3892680', expected '118.3892680', error '0.0000000'

Test #23:

score: 0
Accepted
time: 1ms
memory: 4244kb

input:

93 66 43

output:

97.90484086

result:

ok found '97.9048409', expected '97.9048409', error '0.0000000'

Test #24:

score: 0
Accepted
time: 1ms
memory: 4200kb

input:

78 93 30

output:

44.84545233

result:

ok found '44.8454523', expected '44.8454523', error '0.0000000'

Test #25:

score: 0
Accepted
time: 0ms
memory: 3876kb

input:

9 5 481032867

output:

400507342.36673832

result:

ok found '400507342.3667383', expected '400507342.3667384', error '0.0000000'

Test #26:

score: 0
Accepted
time: 2ms
memory: 8516kb

input:

366 73 3

output:

149.48646423

result:

ok found '149.4864642', expected '149.4864642', error '0.0000000'

Test #27:

score: 0
Accepted
time: 0ms
memory: 3980kb

input:

6 4 5

output:

2.89464517

result:

ok found '2.8946452', expected '2.8946452', error '0.0000000'

Test #28:

score: 0
Accepted
time: 0ms
memory: 3988kb

input:

8 10 5

output:

3.39736085

result:

ok found '3.3973609', expected '3.3973609', error '0.0000000'

Test #29:

score: 0
Accepted
time: 0ms
memory: 3880kb

input:

10 1 7

output:

15.75000000

result:

ok found '15.7500000', expected '15.7500000', error '0.0000000'

Test #30:

score: 0
Accepted
time: 0ms
memory: 3980kb

input:

10 7 10

output:

7.37164661

result:

ok found '7.3716466', expected '7.3716466', error '0.0000000'

Test #31:

score: 0
Accepted
time: 0ms
memory: 3840kb

input:

2 8 1

output:

1.32710692

result:

ok found '1.3271069', expected '1.3271069', error '0.0000000'