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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
#432610#8774. Manhattan Walkideograph_advantage#AC ✓18ms11256kbC++201.5kb2024-06-07 13:52:462024-06-07 13:52:48

Judging History

你现在查看的是最新测评结果

  • [2024-06-07 13:52:48]
  • 评测
  • 测评结果:AC
  • 用时:18ms
  • 内存:11256kb
  • [2024-06-07 13:52:46]
  • 提交

answer


#include <bits/stdc++.h>

using namespace std;

#define iter(v) v.begin(), v.end()
#define SZ(v) int(v.size())
#define pb emplace_back
#define ff first
#define ss second

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

#ifdef zisk
void debug(){cerr << "\n";}
template<class T, class ... U>
void debug(T a, U ... b){ cerr << a << " ", debug(b...); }
template<class T> void pary(T l, T r){
	while(l != r) cerr << *l << " ", l++;
	cerr << "\n";
}
#else
#define debug(...) void()
#define pary(...) void()
#endif

template<class A, class B>
ostream& operator<<(ostream& o, pair<A, B> p){
	return o << '(' << p.ff << ',' << p.ss << ')';
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int r,c;
	double p;
	cin >> r >> c >> p;
	vector<vector<double> > dp(r,vector<double>(c));
	for(int i=r-1;i>=0;i--){
		for(int j=c-1;j>=0;j--){
			if(i==r-1 && j==c-1){
				continue;
			}
			if(i==r-1){
				dp[i][j]=dp[i][j+1]+p/4;
			}
			else if(j==c-1){
				dp[i][j]=dp[i+1][j]+p/4;
			}
			else{
				if(dp[i][j+1]<=dp[i+1][j]){
					dp[i][j]+=dp[i][j+1]/2;
					double u=dp[i+1][j]-dp[i][j+1];
					u=min(u,p);
					dp[i][j]+=(p-u)/p*dp[i+1][j]/2;
					dp[i][j]+=u/p/2*(dp[i][j+1]+u/2);
				}
				else{
					dp[i][j]+=dp[i+1][j]/2;
					double u=dp[i][j+1]-dp[i+1][j];
					u=min(u,p);
					dp[i][j]+=(p-u)/p*dp[i][j+1]/2;
					dp[i][j]+=u/p/2*(dp[i+1][j]+u/2);
				}
				//debug(i,j,dp[i][j]);
			}
		}
	}
	for(int i=0;i<r;i++){
		//pary(iter(dp[i]));
	}
	cout << fixed << setprecision(12) << dp[0][0] << "\n";
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 3864kb

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: 3940kb

input:

5 5 5

output:

2.432233868874

result:

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

Test #3:

score: 0
Accepted
time: 0ms
memory: 3868kb

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: 11092kb

input:

1000 1000 1000000000

output:

1782317138.808377265930

result:

ok found '1782317138.8083773', expected '1782317138.8083761', error '0.0000000'

Test #5:

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

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: 3792kb

input:

4 1 5

output:

3.750000000000

result:

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

Test #7:

score: 0
Accepted
time: 1ms
memory: 4028kb

input:

1 1 1000000000

output:

0.000000000000

result:

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

Test #8:

score: 0
Accepted
time: 1ms
memory: 4028kb

input:

1 2 1000000000

output:

250000000.000000000000

result:

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

Test #9:

score: 0
Accepted
time: 0ms
memory: 4024kb

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: 3796kb

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: 3780kb

input:

2 1 1

output:

0.250000000000

result:

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

Test #12:

score: 0
Accepted
time: 1ms
memory: 3864kb

input:

1 10 3

output:

6.750000000000

result:

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

Test #13:

score: 0
Accepted
time: 0ms
memory: 3924kb

input:

10 1 3

output:

6.750000000000

result:

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

Test #14:

score: 0
Accepted
time: 13ms
memory: 11256kb

input:

997 993 998244353

output:

1779941051.346163034439

result:

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

Test #15:

score: 0
Accepted
time: 6ms
memory: 5868kb

input:

988 313 886183312

output:

78753022570.483352661133

result:

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

Test #16:

score: 0
Accepted
time: 3ms
memory: 4588kb

input:

583 286 322190846

output:

8636356976.843713760376

result:

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

Test #17:

score: 0
Accepted
time: 8ms
memory: 6696kb

input:

892 468 494964816

output:

17125998682.729249954224

result:

ok found '17125998682.7292500', expected '17125998682.7292328', error '0.0000000'

Test #18:

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

input:

26 882 386682745

output:

78231677700.750396728516

result:

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

Test #19:

score: 0
Accepted
time: 10ms
memory: 9560kb

input:

867 926 422131798

output:

945100500.399106740952

result:

ok found '945100500.3991067', expected '945100500.3991071', error '0.0000000'

Test #20:

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

input:

37 68 19

output:

62.284459880159

result:

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

Test #21:

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

input:

23 90 80

output:

860.050698735791

result:

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

Test #22:

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

input:

43 55 85

output:

118.389267967564

result:

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

Test #23:

score: 0
Accepted
time: 0ms
memory: 3916kb

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: 3956kb

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: 3864kb

input:

9 5 481032867

output:

400507342.366738259792

result:

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

Test #26:

score: 0
Accepted
time: 1ms
memory: 3916kb

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: 3900kb

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: 3900kb

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: 4012kb

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: 3792kb

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: 3788kb

input:

2 8 1

output:

1.327106919466

result:

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