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QOJ

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
#659026#8774. Manhattan WalkdaoqiAC ✓15ms18896kbC++201.2kb2024-10-19 18:17:122024-10-19 18:17:14

Judging History

你现在查看的是最新测评结果

  • [2024-10-19 18:17:14]
  • 评测
  • 测评结果:AC
  • 用时:15ms
  • 内存:18896kb
  • [2024-10-19 18:17:12]
  • 提交

answer

#include<bits/stdc++.h>

using i64 = long long;
using l64 = long double;

void DAOQI() {
    i64 r, c, p;
    std::cin >> r >> c >> p;
    std::vector f(r + 1, std::vector(c + 1, l64{}));
    for (int i = r; i >= 1; i--) {
        for (int j = c; j >= 1; j--) {
            if (i == r && j == c) {
                f[i][j] = 0;
            } else if (i == r) {
                f[i][j] = 0.25 * p + f[i][j + 1];
            } else if (j == c) {
                f[i][j] = 0.25 * p + f[i + 1][j];
            } else {
                l64 a = f[i + 1][j], b = f[i][j + 1];
                if (a > b) {
                    std::swap(a, b);
                }
                if (a + p <= b) {
                    f[i][j] = 0.25 * p + a;
                } else {
                    f[i][j] = 0.5 * (a + p - b) / p * b + 0.5 * a + 0.5 * (b - a) / p * 0.5 * (a + b);
                }
            }
        }
    }
    std::cout << std::fixed << std::setprecision(10) << f[1][1] << "\n";
}

signed main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    int T = 1;
    //std::cin >> T;
    while (T--) DAOQI();
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3812kb

input:

2 3 8

output:

2.8750000000

result:

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

Test #2:

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

input:

5 5 5

output:

2.4322338689

result:

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

Test #3:

score: 0
Accepted
time: 0ms
memory: 3680kb

input:

1 1 1

output:

0.0000000000

result:

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

Test #4:

score: 0
Accepted
time: 11ms
memory: 18896kb

input:

1000 1000 1000000000

output:

1782317138.8083752501

result:

ok found '1782317138.8083754', expected '1782317138.8083761', error '0.0000000'

Test #5:

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

input:

1 4 5

output:

3.7500000000

result:

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

Test #6:

score: 0
Accepted
time: 0ms
memory: 3684kb

input:

4 1 5

output:

3.7500000000

result:

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

Test #7:

score: 0
Accepted
time: 1ms
memory: 3900kb

input:

1 1 1000000000

output:

0.0000000000

result:

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

Test #8:

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

input:

1 2 1000000000

output:

250000000.0000000000

result:

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

Test #9:

score: 0
Accepted
time: 0ms
memory: 3684kb

input:

2 1 1000000000

output:

250000000.0000000000

result:

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

Test #10:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

1 2 1

output:

0.2500000000

result:

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

Test #11:

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

input:

2 1 1

output:

0.2500000000

result:

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

Test #12:

score: 0
Accepted
time: 0ms
memory: 3896kb

input:

1 10 3

output:

6.7500000000

result:

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

Test #13:

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

input:

10 1 3

output:

6.7500000000

result:

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

Test #14:

score: 0
Accepted
time: 15ms
memory: 18648kb

input:

997 993 998244353

output:

1779941051.3461624370

result:

ok found '1779941051.3461623', expected '1779941051.3461628', error '0.0000000'

Test #15:

score: 0
Accepted
time: 6ms
memory: 8044kb

input:

988 313 886183312

output:

78753022570.4833192229

result:

ok found '78753022570.4833221', expected '78753022570.4833527', error '0.0000000'

Test #16:

score: 0
Accepted
time: 0ms
memory: 5888kb

input:

583 286 322190846

output:

8636356976.8437140295

result:

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

Test #17:

score: 0
Accepted
time: 4ms
memory: 9708kb

input:

892 468 494964816

output:

17125998682.7292389842

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:

78231677700.7504221499

result:

ok found '78231677700.7504272', expected '78231677700.7504883', error '0.0000000'

Test #19:

score: 0
Accepted
time: 12ms
memory: 15840kb

input:

867 926 422131798

output:

945100500.3991072656

result:

ok found '945100500.3991072', expected '945100500.3991071', error '0.0000000'

Test #20:

score: 0
Accepted
time: 0ms
memory: 3848kb

input:

37 68 19

output:

62.2844598802

result:

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

Test #21:

score: 0
Accepted
time: 0ms
memory: 4020kb

input:

23 90 80

output:

860.0506987358

result:

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

Test #22:

score: 0
Accepted
time: 0ms
memory: 3724kb

input:

43 55 85

output:

118.3892679676

result:

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

Test #23:

score: 0
Accepted
time: 0ms
memory: 3904kb

input:

93 66 43

output:

97.9048408588

result:

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

Test #24:

score: 0
Accepted
time: 0ms
memory: 4112kb

input:

78 93 30

output:

44.8454523265

result:

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

Test #25:

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

input:

9 5 481032867

output:

400507342.3667383420

result:

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

Test #26:

score: 0
Accepted
time: 1ms
memory: 3884kb

input:

366 73 3

output:

149.4864642331

result:

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

Test #27:

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

input:

6 4 5

output:

2.8946451697

result:

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

Test #28:

score: 0
Accepted
time: 0ms
memory: 3812kb

input:

8 10 5

output:

3.3973608525

result:

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

Test #29:

score: 0
Accepted
time: 1ms
memory: 3804kb

input:

10 1 7

output:

15.7500000000

result:

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

Test #30:

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

input:

10 7 10

output:

7.3716466074

result:

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

Test #31:

score: 0
Accepted
time: 0ms
memory: 3812kb

input:

2 8 1

output:

1.3271069195

result:

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