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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 |
---|---|---|---|---|---|---|---|---|---|
#590296 | #8774. Manhattan Walk | pikaka# | AC ✓ | 12ms | 10960kb | C++17 | 1003b | 2024-09-25 23:06:28 | 2024-09-25 23:06:29 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
void solve() {
int n, m;
cin >> n >> m;
vector<vector<double>> p(n + 1, vector<double> (m + 1));
double q;
cin >> q;
for (int i = n; i > 0; i--) {
for (int j = m; j > 0; j--) {
if (i == n && j == m) continue;
if (i == n) p[i][j] = p[i][j + 1] + q / 4;
else if (j == m) p[i][j] = p[i + 1][j] + q / 4;
else {
double a = p[i + 1][j], b = p[i][j + 1];
if (a > b) swap(a, b);
double x = b - a;
if (x >= q) {
p[i][j] = a + q / 4;
} else {
p[i][j] = a / 2 + x / q * (a + x / 2) / 2 + (q - x) / q * b / 2;
}
}
}
}
cout << fixed << setprecision(8) << p[1][1] << "\n";
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3984kb
input:
2 3 8
output:
2.87500000
result:
ok found '2.8750000', expected '2.8750000', error '0.0000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3812kb
input:
5 5 5
output:
2.43223387
result:
ok found '2.4322339', expected '2.4322339', error '0.0000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 4048kb
input:
1 1 1
output:
0.00000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #4:
score: 0
Accepted
time: 12ms
memory: 10960kb
input:
1000 1000 1000000000
output:
1782317138.80837631
result:
ok found '1782317138.8083763', expected '1782317138.8083761', error '0.0000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
1 4 5
output:
3.75000000
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:
3.75000000
result:
ok found '3.7500000', expected '3.7500000', error '0.0000000'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
1 1 1000000000
output:
0.00000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
1 2 1000000000
output:
250000000.00000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3768kb
input:
2 1 1000000000
output:
250000000.00000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3832kb
input:
1 2 1
output:
0.25000000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3812kb
input:
2 1 1
output:
0.25000000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #12:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
1 10 3
output:
6.75000000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
10 1 3
output:
6.75000000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #14:
score: 0
Accepted
time: 12ms
memory: 10952kb
input:
997 993 998244353
output:
1779941051.34616327
result:
ok found '1779941051.3461633', expected '1779941051.3461628', error '0.0000000'
Test #15:
score: 0
Accepted
time: 5ms
memory: 5672kb
input:
988 313 886183312
output:
78753022570.48339844
result:
ok found '78753022570.4833984', expected '78753022570.4833527', error '0.0000000'
Test #16:
score: 0
Accepted
time: 3ms
memory: 4372kb
input:
583 286 322190846
output:
8636356976.84371376
result:
ok found '8636356976.8437138', expected '8636356976.8437138', error '0.0000000'
Test #17:
score: 0
Accepted
time: 3ms
memory: 6636kb
input:
892 468 494964816
output:
17125998682.72924423
result:
ok found '17125998682.7292442', expected '17125998682.7292328', error '0.0000000'
Test #18:
score: 0
Accepted
time: 1ms
memory: 4180kb
input:
26 882 386682745
output:
78231677700.75044250
result:
ok found '78231677700.7504425', expected '78231677700.7504883', error '0.0000000'
Test #19:
score: 0
Accepted
time: 8ms
memory: 9392kb
input:
867 926 422131798
output:
945100500.39910734
result:
ok found '945100500.3991073', expected '945100500.3991071', error '0.0000000'
Test #20:
score: 0
Accepted
time: 0ms
memory: 4072kb
input:
37 68 19
output:
62.28445988
result:
ok found '62.2844599', expected '62.2844599', error '0.0000000'
Test #21:
score: 0
Accepted
time: 0ms
memory: 3832kb
input:
23 90 80
output:
860.05069874
result:
ok found '860.0506987', expected '860.0506987', error '0.0000000'
Test #22:
score: 0
Accepted
time: 0ms
memory: 3900kb
input:
43 55 85
output:
118.38926797
result:
ok found '118.3892680', expected '118.3892680', error '0.0000000'
Test #23:
score: 0
Accepted
time: 0ms
memory: 4048kb
input:
93 66 43
output:
97.90484086
result:
ok found '97.9048409', expected '97.9048409', error '0.0000000'
Test #24:
score: 0
Accepted
time: 0ms
memory: 3944kb
input:
78 93 30
output:
44.84545233
result:
ok found '44.8454523', expected '44.8454523', error '0.0000000'
Test #25:
score: 0
Accepted
time: 0ms
memory: 4064kb
input:
9 5 481032867
output:
400507342.36673832
result:
ok found '400507342.3667383', expected '400507342.3667384', error '0.0000000'
Test #26:
score: 0
Accepted
time: 1ms
memory: 4036kb
input:
366 73 3
output:
149.48646423
result:
ok found '149.4864642', expected '149.4864642', error '0.0000000'
Test #27:
score: 0
Accepted
time: 0ms
memory: 4044kb
input:
6 4 5
output:
2.89464517
result:
ok found '2.8946452', expected '2.8946452', error '0.0000000'
Test #28:
score: 0
Accepted
time: 0ms
memory: 3984kb
input:
8 10 5
output:
3.39736085
result:
ok found '3.3973609', expected '3.3973609', error '0.0000000'
Test #29:
score: 0
Accepted
time: 0ms
memory: 4040kb
input:
10 1 7
output:
15.75000000
result:
ok found '15.7500000', expected '15.7500000', error '0.0000000'
Test #30:
score: 0
Accepted
time: 0ms
memory: 3948kb
input:
10 7 10
output:
7.37164661
result:
ok found '7.3716466', expected '7.3716466', error '0.0000000'
Test #31:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
2 8 1
output:
1.32710692
result:
ok found '1.3271069', expected '1.3271069', error '0.0000000'