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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 |
---|---|---|---|---|---|---|---|---|---|
#433899 | #8774. Manhattan Walk | mendicillin2# | AC ✓ | 15ms | 11828kb | C++14 | 2.1kb | 2024-06-08 13:49:01 | 2024-06-08 13:49:17 |
Judging History
answer
#include <bits/stdc++.h>
#define LL long long
#define ull unsigned long long
#define F(i, j, k) for (int i = j; i <= k; ++i)
#define DF(i, j, k) for (int i = j; i >= k; --i)
using namespace std;
template <typename T> inline void read(T &n) {
T w = 1;
n = 0;
char ch = getchar();
while (!isdigit(ch) && ch != EOF) {
if (ch == '-') w = -1;
ch = getchar();
}
while (isdigit(ch) && ch != EOF) {
n = (n << 3) + (n << 1) + (ch & 15);
ch = getchar();
}
n *= w;
}
template <typename T> inline void write(T x) {
T l = 0;
ull y = 0;
if (!x) { putchar(48); return; }
if (x < 0) { x = -x; putchar('-'); }
while (x) { y = y * 10 + x % 10; x /= 10; ++l; }
while (l) { putchar(y % 10 + 48); y /= 10; --l; }
}
template <typename T> inline void writes(T x) {
write(x);
putchar(' ');
}
template <typename T> inline void writeln(T x) {
write(x);
puts("");
}
template <typename T> inline void checkmax(T &a, T b) { a = a > b ? a : b; }
template <typename T> inline void checkmin(T &a, T b) { a = a < b ? a : b; }
double dp[1010][1010];
int main() {
//freopen(".in", "r", stdin);
//freopen(".out", "w", stdout);
int n, m, P;
read(n); read(m); read(P);
double p = P;
F(i, 1, n)
F(j, 1, m) {
if (i == 1 && j == 1) { dp[i][j] = 0; continue; }
if (i == 1) { dp[i][j] = dp[i][j - 1] + 0.25 * p; continue; }
if (j == 1) { dp[i][j] = dp[i - 1][j] + 0.25 * p; continue; }
if (dp[i - 1][j] < dp[i][j - 1]) {
double cur = min(dp[i][j - 1] - dp[i - 1][j], p);
dp[i][j] = 0.5 * dp[i - 1][j] + 0.5 * cur / p * (dp[i - 1][j] + 0.5 * cur) + 0.5 * (1 - cur / p) * dp[i][j - 1];
}
else {
double cur = min(dp[i - 1][j] - dp[i][j - 1], p);
dp[i][j] = 0.5 * dp[i][j - 1] + 0.5 * cur / p * (dp[i][j - 1] + 0.5 * cur) + 0.5 * (1 - cur / p) * dp[i - 1][j];
}
}
cout << fixed << setprecision(10) << dp[n][m] << '\n';
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3852kb
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: 3924kb
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: 3856kb
input:
1 1 1
output:
0.0000000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #4:
score: 0
Accepted
time: 15ms
memory: 11828kb
input:
1000 1000 1000000000
output:
1782317138.8083753586
result:
ok found '1782317138.8083754', expected '1782317138.8083761', error '0.0000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3780kb
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: 3804kb
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: 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: 3896kb
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: 3908kb
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: 3892kb
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: 3904kb
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: 3900kb
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: 3928kb
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: 11808kb
input:
997 993 998244353
output:
1779941051.3461599350
result:
ok found '1779941051.3461599', expected '1779941051.3461628', error '0.0000000'
Test #15:
score: 0
Accepted
time: 3ms
memory: 11412kb
input:
988 313 886183312
output:
78753022570.4833068848
result:
ok found '78753022570.4833069', expected '78753022570.4833527', error '0.0000000'
Test #16:
score: 0
Accepted
time: 4ms
memory: 9312kb
input:
583 286 322190846
output:
8636356976.8437156677
result:
ok found '8636356976.8437157', expected '8636356976.8437138', error '0.0000000'
Test #17:
score: 0
Accepted
time: 7ms
memory: 10892kb
input:
892 468 494964816
output:
17125998682.7292442322
result:
ok found '17125998682.7292442', expected '17125998682.7292328', error '0.0000000'
Test #18:
score: 0
Accepted
time: 1ms
memory: 4060kb
input:
26 882 386682745
output:
78231677700.7503814697
result:
ok found '78231677700.7503815', expected '78231677700.7504883', error '0.0000000'
Test #19:
score: 0
Accepted
time: 12ms
memory: 11392kb
input:
867 926 422131798
output:
945100500.3991073370
result:
ok found '945100500.3991073', expected '945100500.3991071', error '0.0000000'
Test #20:
score: 0
Accepted
time: 0ms
memory: 4052kb
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: 3960kb
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: 4024kb
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: 4252kb
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: 5976kb
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: 3896kb
input:
9 5 481032867
output:
400507342.3667383194
result:
ok found '400507342.3667383', expected '400507342.3667384', error '0.0000000'
Test #26:
score: 0
Accepted
time: 0ms
memory: 8088kb
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: 3920kb
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: 3920kb
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: 3892kb
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: 3740kb
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: 3828kb
input:
2 8 1
output:
1.3271069195
result:
ok found '1.3271069', expected '1.3271069', error '0.0000000'