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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
#456348#8774. Manhattan Walkucup-team2307#AC ✓12ms22580kbC++201.1kb2024-06-27 19:18:192024-06-27 19:18:19

Judging History

你现在查看的是最新测评结果

  • [2024-06-27 19:18:19]
  • 评测
  • 测评结果:AC
  • 用时:12ms
  • 内存:22580kb
  • [2024-06-27 19:18:19]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

using ll = long long;
//#define int ll
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
using pii = pair<int, int>;
using vi = vector<int>;
#define fi first
#define se second
#define pb push_back

const int N = 2222;

double p;
double dp[N][N];
double f(int n, int m)
{
    if (n > m) swap(n, m);
    if (dp[n][m] > -0.1)
        return dp[n][m];
    if (n==1 && m==1) return 0;

    if (n == 1) return dp[n][m] = f(n, m-1)+p/4;

    double a = f(n, m-1);
    double b = f(n-1, m);

    if (a > b) swap(a, b);
    double h = b-a;

    double ans = 0;

    ans += 0;
    ans += p/2 - (p-h)*max<double>(0, (1-h/p))/2;

    return dp[n][m] = ans/2+a;
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);

    int n, m;
    cin>>n>>m>>p;
    for (int i=1; i<=max(n, m); i++)
        for (int j=1; j<=max(n, m); j++)
            dp[i][j] = -1;

    cout<<fixed<<setprecision(10);
    cout<<f(n, m)<<"\n";
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3820kb

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: 3824kb

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: 3756kb

input:

1 1 1

output:

0.0000000000

result:

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

Test #4:

score: 0
Accepted
time: 12ms
memory: 21456kb

input:

1000 1000 1000000000

output:

1782317138.8083751202

result:

ok found '1782317138.8083751', expected '1782317138.8083761', error '0.0000000'

Test #5:

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

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: 3820kb

input:

4 1 5

output:

3.7500000000

result:

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

Test #7:

score: 0
Accepted
time: 0ms
memory: 5772kb

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: 3756kb

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: 3884kb

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: 3752kb

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: 3756kb

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: 3904kb

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: 3784kb

input:

10 1 3

output:

6.7500000000

result:

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

Test #14:

score: 0
Accepted
time: 12ms
memory: 22580kb

input:

997 993 998244353

output:

1779941051.3461627960

result:

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

Test #15:

score: 0
Accepted
time: 7ms
memory: 20860kb

input:

988 313 886183312

output:

78753022570.4833221436

result:

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

Test #16:

score: 0
Accepted
time: 5ms
memory: 14556kb

input:

583 286 322190846

output:

8636356976.8437137604

result:

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

Test #17:

score: 0
Accepted
time: 11ms
memory: 20912kb

input:

892 468 494964816

output:

17125998682.7292366028

result:

ok found '17125998682.7292366', expected '17125998682.7292328', error '0.0000000'

Test #18:

score: 0
Accepted
time: 0ms
memory: 19040kb

input:

26 882 386682745

output:

78231677700.7504272461

result:

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

Test #19:

score: 0
Accepted
time: 10ms
memory: 21188kb

input:

867 926 422131798

output:

945100500.3991078138

result:

ok found '945100500.3991078', expected '945100500.3991071', error '0.0000000'

Test #20:

score: 0
Accepted
time: 0ms
memory: 5932kb

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: 4296kb

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: 6180kb

input:

43 55 85

output:

118.3892679676

result:

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

Test #23:

score: 0
Accepted
time: 1ms
memory: 6144kb

input:

93 66 43

output:

97.9048408588

result:

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

Test #24:

score: 0
Accepted
time: 1ms
memory: 6280kb

input:

78 93 30

output:

44.8454523265

result:

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

Test #25:

score: 0
Accepted
time: 1ms
memory: 5744kb

input:

9 5 481032867

output:

400507342.3667383194

result:

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

Test #26:

score: 0
Accepted
time: 2ms
memory: 10852kb

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: 3968kb

input:

6 4 5

output:

2.8946451697

result:

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

Test #28:

score: 0
Accepted
time: 1ms
memory: 5876kb

input:

8 10 5

output:

3.3973608525

result:

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

Test #29:

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

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: 3792kb

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: 3756kb

input:

2 8 1

output:

1.3271069195

result:

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