QOJ.ac
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 Walk | daoqi | AC ✓ | 15ms | 18896kb | C++20 | 1.2kb | 2024-10-19 18:17:12 | 2024-10-19 18:17:14 |
Judging History
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'