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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 |
---|---|---|---|---|---|---|---|---|---|
#661228 | #8774. Manhattan Walk | comeintocalm# | AC ✓ | 12ms | 11888kb | C++20 | 946b | 2024-10-20 15:22:27 | 2024-10-20 15:22:30 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N = 1e3+7;
double f[N][N], pw2[N*2];
int main() {
double P, r, c;
pw2[0] = 1.0;
for(int i = 1; i <= 2002; i++)
pw2[i] = pw2[i - 1] * 0.50;
cin >> r >> c >> P;
for(int i = r; i >= 1; i--) {
for(int j = c; j >= 1; j--) {
if(i == r && j == c) continue;
if(i == r) {
f[i][j] = f[i][j + 1] + P * pw2[2];
}
else if(j == c) {
f[i][j] = f[i + 1][j] + P * pw2[2];
}
else {
//f[i][j] = pw2[1] * min(f[i + 1][j], f[i][j + 1] + P * pw2[1])
// + pw2[1] * min(f[i][j + 1], f[i + 1][j] + P * pw2[1]);
double fx = f[i + 1][j], fy = f[i][j + 1];
if(fx > fy) swap(fx, fy);
if(fy >= fx + P) {
f[i][j] = fx + P * pw2[2];
} else {
f[i][j] = (P - fy + fx) * fy / (2*P) + fx / 2 + (fy - fx) * (fx + fy) / (4*P);
}
}
}
}
printf("%.8lf", f[1][1]);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3980kb
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: 4004kb
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: 3988kb
input:
1 1 1
output:
0.00000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #4:
score: 0
Accepted
time: 10ms
memory: 11724kb
input:
1000 1000 1000000000
output:
1782317138.80837584
result:
ok found '1782317138.8083758', expected '1782317138.8083761', error '0.0000000'
Test #5:
score: 0
Accepted
time: 1ms
memory: 4036kb
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: 3988kb
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: 3976kb
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: 3984kb
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: 3804kb
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: 3988kb
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: 4032kb
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: 3844kb
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: 4016kb
input:
10 1 3
output:
6.75000000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #14:
score: 0
Accepted
time: 10ms
memory: 11888kb
input:
997 993 998244353
output:
1779941051.34616065
result:
ok found '1779941051.3461607', expected '1779941051.3461628', error '0.0000000'
Test #15:
score: 0
Accepted
time: 6ms
memory: 11348kb
input:
988 313 886183312
output:
78753022570.48333740
result:
ok found '78753022570.4833374', expected '78753022570.4833527', error '0.0000000'
Test #16:
score: 0
Accepted
time: 0ms
memory: 8376kb
input:
583 286 322190846
output:
8636356976.84371758
result:
ok found '8636356976.8437176', expected '8636356976.8437138', error '0.0000000'
Test #17:
score: 0
Accepted
time: 7ms
memory: 10976kb
input:
892 468 494964816
output:
17125998682.72924042
result:
ok found '17125998682.7292404', expected '17125998682.7292328', error '0.0000000'
Test #18:
score: 0
Accepted
time: 1ms
memory: 4040kb
input:
26 882 386682745
output:
78231677700.75039673
result:
ok found '78231677700.7503967', expected '78231677700.7504883', error '0.0000000'
Test #19:
score: 0
Accepted
time: 12ms
memory: 10660kb
input:
867 926 422131798
output:
945100500.39910698
result:
ok found '945100500.3991070', expected '945100500.3991071', error '0.0000000'
Test #20:
score: 0
Accepted
time: 1ms
memory: 4100kb
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: 3892kb
input:
23 90 80
output:
860.05069874
result:
ok found '860.0506987', expected '860.0506987', error '0.0000000'
Test #22:
score: 0
Accepted
time: 1ms
memory: 4176kb
input:
43 55 85
output:
118.38926797
result:
ok found '118.3892680', expected '118.3892680', error '0.0000000'
Test #23:
score: 0
Accepted
time: 1ms
memory: 4280kb
input:
93 66 43
output:
97.90484086
result:
ok found '97.9048409', expected '97.9048409', error '0.0000000'
Test #24:
score: 0
Accepted
time: 1ms
memory: 4228kb
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: 4016kb
input:
9 5 481032867
output:
400507342.36673826
result:
ok found '400507342.3667383', expected '400507342.3667384', error '0.0000000'
Test #26:
score: 0
Accepted
time: 2ms
memory: 6528kb
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: 4060kb
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: 4012kb
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: 3884kb
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: 3824kb
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: 3792kb
input:
2 8 1
output:
1.32710692
result:
ok found '1.3271069', expected '1.3271069', error '0.0000000'