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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 |
---|---|---|---|---|---|---|---|---|---|
#643045 | #8774. Manhattan Walk | ticking_away# | AC ✓ | 17ms | 11148kb | C++20 | 1.9kb | 2024-10-15 18:16:50 | 2024-10-15 18:16:54 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ui = unsigned int;
using ull = unsigned long long;
using ll = long long;
#define endl '\n'
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int maxn = 2e5 + 10;
const int mod = 1000000007;
#define inl inline
#define fr(i, a, b) for (int i = a; i <= b; i++)
#define ford(i, a, b) for (int i = a; i >= b; i--)
#define forall(i, a) for (auto &i : a)
/**
____ ___ _____
/ ___| _ _ / _ \___ /
\___ \| | | | | | ||_ \
___) | |_| | |_| |__) |
|____/ \__, |\___/____/
|___/
*/
istream &operator>>(istream &in, vector<int> &v)
{
for (auto &i : v)
in >> i;
return in;
}
ostream &operator<<(ostream &out, vector<int> &v)
{
for (auto &i : v)
out << i << " ";
return out;
}
bool _output = 0;
#define int long long
using db = double;
void solve()
{
int r, c;
cin >> r >> c;
int p;
cin >> p;
vector<vector<db>> f(r + 2, vector<db>(c + 2, 1e13));
f[r][c] = 0;
for (int i = r; i >= 1; i--)
{
for (int j = c; j >= 1; j--)
{
if (r == i && c == j)
continue;
db x = min(f[i][j + 1], f[i + 1][j]);
db y = max(f[i][j + 1], f[i + 1][j]);
db z = min(1.0 * (y - x), 1.0 * p);
db t = 1.0 * p * x + 1.0 * z * x + 1.0 * (z)*z / 2.0 + 1.0 * y * (p - z);
f[i][j] = t / (2.0 * p);
// if (i == 4 && j == 4)
// cout << x << " " << y << " " << z << " " << t << endl;
// cout << i << " " << j << " " << f[i][j] << "\n";
}
// cout << endl;
}
cout << fixed << setprecision(6) << f[1][1] << endl;
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int _ = 1;
if (_output)
cin >> _;
while (_--)
solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3720kb
input:
2 3 8
output:
2.875000
result:
ok found '2.8750000', expected '2.8750000', error '0.0000000'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3776kb
input:
5 5 5
output:
2.432234
result:
ok found '2.4322340', expected '2.4322339', error '0.0000001'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3808kb
input:
1 1 1
output:
0.000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #4:
score: 0
Accepted
time: 13ms
memory: 11148kb
input:
1000 1000 1000000000
output:
1782317138.808376
result:
ok found '1782317138.8083761', expected '1782317138.8083761', error '0.0000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3784kb
input:
1 4 5
output:
3.750000
result:
ok found '3.7500000', expected '3.7500000', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3912kb
input:
4 1 5
output:
3.750000
result:
ok found '3.7500000', expected '3.7500000', error '0.0000000'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3768kb
input:
1 1 1000000000
output:
0.000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3940kb
input:
1 2 1000000000
output:
250000000.000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3800kb
input:
2 1 1000000000
output:
250000000.000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3784kb
input:
1 2 1
output:
0.250000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3776kb
input:
2 1 1
output:
0.250000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #12:
score: 0
Accepted
time: 1ms
memory: 3720kb
input:
1 10 3
output:
6.750000
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:
6.750000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #14:
score: 0
Accepted
time: 17ms
memory: 10908kb
input:
997 993 998244353
output:
1779941051.346160
result:
ok found '1779941051.3461599', expected '1779941051.3461628', error '0.0000000'
Test #15:
score: 0
Accepted
time: 5ms
memory: 5672kb
input:
988 313 886183312
output:
78753022570.483292
result:
ok found '78753022570.4832916', expected '78753022570.4833527', error '0.0000000'
Test #16:
score: 0
Accepted
time: 3ms
memory: 4412kb
input:
583 286 322190846
output:
8636356976.843716
result:
ok found '8636356976.8437157', expected '8636356976.8437138', error '0.0000000'
Test #17:
score: 0
Accepted
time: 7ms
memory: 6464kb
input:
892 468 494964816
output:
17125998682.729239
result:
ok found '17125998682.7292385', expected '17125998682.7292328', error '0.0000000'
Test #18:
score: 0
Accepted
time: 0ms
memory: 4004kb
input:
26 882 386682745
output:
78231677700.750443
result:
ok found '78231677700.7504425', expected '78231677700.7504883', error '0.0000000'
Test #19:
score: 0
Accepted
time: 14ms
memory: 9356kb
input:
867 926 422131798
output:
945100500.399107
result:
ok found '945100500.3991070', expected '945100500.3991071', error '0.0000000'
Test #20:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
37 68 19
output:
62.284460
result:
ok found '62.2844600', expected '62.2844599', error '0.0000000'
Test #21:
score: 0
Accepted
time: 0ms
memory: 3812kb
input:
23 90 80
output:
860.050699
result:
ok found '860.0506990', expected '860.0506987', error '0.0000000'
Test #22:
score: 0
Accepted
time: 0ms
memory: 4056kb
input:
43 55 85
output:
118.389268
result:
ok found '118.3892680', expected '118.3892680', error '0.0000000'
Test #23:
score: 0
Accepted
time: 1ms
memory: 3852kb
input:
93 66 43
output:
97.904841
result:
ok found '97.9048410', expected '97.9048409', error '0.0000000'
Test #24:
score: 0
Accepted
time: 1ms
memory: 3928kb
input:
78 93 30
output:
44.845452
result:
ok found '44.8454520', expected '44.8454523', error '0.0000000'
Test #25:
score: 0
Accepted
time: 0ms
memory: 3792kb
input:
9 5 481032867
output:
400507342.366738
result:
ok found '400507342.3667380', expected '400507342.3667384', error '0.0000000'
Test #26:
score: 0
Accepted
time: 0ms
memory: 4012kb
input:
366 73 3
output:
149.486464
result:
ok found '149.4864640', expected '149.4864642', error '0.0000000'
Test #27:
score: 0
Accepted
time: 0ms
memory: 4008kb
input:
6 4 5
output:
2.894645
result:
ok found '2.8946450', expected '2.8946452', error '0.0000001'
Test #28:
score: 0
Accepted
time: 0ms
memory: 3772kb
input:
8 10 5
output:
3.397361
result:
ok found '3.3973610', expected '3.3973609', error '0.0000000'
Test #29:
score: 0
Accepted
time: 0ms
memory: 4004kb
input:
10 1 7
output:
15.750000
result:
ok found '15.7500000', expected '15.7500000', error '0.0000000'
Test #30:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
10 7 10
output:
7.371647
result:
ok found '7.3716470', expected '7.3716466', error '0.0000001'
Test #31:
score: 0
Accepted
time: 0ms
memory: 3868kb
input:
2 8 1
output:
1.327107
result:
ok found '1.3271070', expected '1.3271069', error '0.0000001'