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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
#430396#8774. Manhattan WalkAfterlife#AC ✓18ms11776kbC++20905b2024-06-03 19:37:322024-06-03 19:37:32

Judging History

你现在查看的是最新测评结果

  • [2024-06-03 19:37:32]
  • 评测
  • 测评结果:AC
  • 用时:18ms
  • 内存:11776kb
  • [2024-06-03 19:37:32]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n , m , p;
double f[1005][1005];
int main() {
    cin >> n >> m >> p ;
    for(int i = 1;i <= n;i++) f[i][m + 1] = 1e18;
    for(int i = 1;i <= m;i++) f[n + 1][i] = 1e18;
    for(int i = n;i >= 1;i--) {
        for(int j = m ; j >= 1;j--) {
            if(i == n && j == m) {
                f[i][j] = 0 ; continue ;
            }
            double a = f[i + 1][j] , b = f[i][j + 1];
            double del = max(a , b) - min(a , b);
            if(del >= p) {
                f[i][j] = 0.5 * min(a , b) + 0.5 * (min(a , b) + p / 2.0) ;
            }
            else {
                f[i][j] = 0.5 * min(a , b) + 0.5 * (min(a,b) + del / p * del / 2 + (1 - del / p) * del) ;
            }
            // printf("%d %d %lf\n",i,j,f[i][j]) ;
        }
    }
    printf("%.12lf\n",f[1][1]) ;
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 3804kb

input:

2 3 8

output:

2.875000000000

result:

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

Test #2:

score: 0
Accepted
time: 0ms
memory: 3892kb

input:

5 5 5

output:

2.432233868874

result:

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

Test #3:

score: 0
Accepted
time: 1ms
memory: 3988kb

input:

1 1 1

output:

0.000000000000

result:

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

Test #4:

score: 0
Accepted
time: 18ms
memory: 11776kb

input:

1000 1000 1000000000

output:

1782317138.808374881744

result:

ok found '1782317138.8083749', expected '1782317138.8083761', error '0.0000000'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

1 4 5

output:

3.750000000000

result:

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

Test #6:

score: 0
Accepted
time: 0ms
memory: 3944kb

input:

4 1 5

output:

3.750000000000

result:

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

Test #7:

score: 0
Accepted
time: 0ms
memory: 3852kb

input:

1 1 1000000000

output:

0.000000000000

result:

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

Test #8:

score: 0
Accepted
time: 0ms
memory: 3864kb

input:

1 2 1000000000

output:

250000000.000000000000

result:

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

Test #9:

score: 0
Accepted
time: 1ms
memory: 3932kb

input:

2 1 1000000000

output:

250000000.000000000000

result:

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

Test #10:

score: 0
Accepted
time: 0ms
memory: 3912kb

input:

1 2 1

output:

0.250000000000

result:

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

Test #11:

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

input:

2 1 1

output:

0.250000000000

result:

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

Test #12:

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

input:

1 10 3

output:

6.750000000000

result:

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

Test #13:

score: 0
Accepted
time: 1ms
memory: 3892kb

input:

10 1 3

output:

6.750000000000

result:

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

Test #14:

score: 0
Accepted
time: 14ms
memory: 11708kb

input:

997 993 998244353

output:

1779941051.346163272858

result:

ok found '1779941051.3461633', expected '1779941051.3461628', error '0.0000000'

Test #15:

score: 0
Accepted
time: 3ms
memory: 11348kb

input:

988 313 886183312

output:

78753022570.483306884766

result:

ok found '78753022570.4833069', expected '78753022570.4833527', error '0.0000000'

Test #16:

score: 0
Accepted
time: 4ms
memory: 9608kb

input:

583 286 322190846

output:

8636356976.843715667725

result:

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

Test #17:

score: 0
Accepted
time: 8ms
memory: 11100kb

input:

892 468 494964816

output:

17125998682.729244232178

result:

ok found '17125998682.7292442', expected '17125998682.7292328', error '0.0000000'

Test #18:

score: 0
Accepted
time: 1ms
memory: 5972kb

input:

26 882 386682745

output:

78231677700.750488281250

result:

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

Test #19:

score: 0
Accepted
time: 14ms
memory: 11252kb

input:

867 926 422131798

output:

945100500.399107694626

result:

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

Test #20:

score: 0
Accepted
time: 1ms
memory: 4100kb

input:

37 68 19

output:

62.284459880159

result:

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

Test #21:

score: 0
Accepted
time: 1ms
memory: 4076kb

input:

23 90 80

output:

860.050698735791

result:

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

Test #22:

score: 0
Accepted
time: 1ms
memory: 6084kb

input:

43 55 85

output:

118.389267967564

result:

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

Test #23:

score: 0
Accepted
time: 1ms
memory: 4328kb

input:

93 66 43

output:

97.904840858751

result:

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

Test #24:

score: 0
Accepted
time: 1ms
memory: 4348kb

input:

78 93 30

output:

44.845452326451

result:

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

Test #25:

score: 0
Accepted
time: 0ms
memory: 4000kb

input:

9 5 481032867

output:

400507342.366738259792

result:

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

Test #26:

score: 0
Accepted
time: 2ms
memory: 7140kb

input:

366 73 3

output:

149.486464233096

result:

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

Test #27:

score: 0
Accepted
time: 0ms
memory: 3984kb

input:

6 4 5

output:

2.894645169729

result:

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

Test #28:

score: 0
Accepted
time: 0ms
memory: 3992kb

input:

8 10 5

output:

3.397360852475

result:

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

Test #29:

score: 0
Accepted
time: 0ms
memory: 3908kb

input:

10 1 7

output:

15.750000000000

result:

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

Test #30:

score: 0
Accepted
time: 0ms
memory: 3908kb

input:

10 7 10

output:

7.371646607394

result:

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

Test #31:

score: 0
Accepted
time: 0ms
memory: 3932kb

input:

2 8 1

output:

1.327106919466

result:

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