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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 |
---|---|---|---|---|---|---|---|---|---|
#427827 | #8774. Manhattan Walk | ucup-team3555# | AC ✓ | 15ms | 11864kb | C++14 | 885b | 2024-06-01 16:04:29 | 2024-06-01 16:04:31 |
Judging History
answer
# include <bits/stdc++.h>
const int N=100010,INF=0x3f3f3f3f;
inline int read(void){
int res,f=1;
char c;
while((c=getchar())<'0'||c>'9')
if(c=='-') f=-1;
res=c-48;
while((c=getchar())>='0'&&c<='9')
res=res*10+c-48;
return res*f;
}
int n,m;
double p;
double f[1010][1010];
double rinf=1e14;
int main(void){
n=read(),m=read(),p=read();
for(int i=1;i<=n+1;++i) for(int j=1;j<=m+1;++j) f[i][j]=rinf;
for(int i=n;i;--i){
for(int j=m;j;--j){
if(i==n&&j==m){
f[i][j]=0;
continue;
}
double A=f[i][j+1],B=f[i+1][j];
f[i][j]=0;
double lim=std::max(A-B,0.0);
lim=std::min(lim,p);
f[i][j]+=(B*lim+0.5*lim*lim+A*(p-lim))/p;
std::swap(A,B),lim=std::max(A-B,0.0),lim=std::min(lim,p);
f[i][j]+=(B*lim+0.5*lim*lim+A*(p-lim))/p;
f[i][j]*=0.5;
}
}
printf("%.12lf",f[1][1]);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3932kb
input:
2 3 8
output:
2.875000000000
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:
2.432233868874
result:
ok found '2.4322339', expected '2.4322339', error '0.0000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
1 1 1
output:
0.000000000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #4:
score: 0
Accepted
time: 15ms
memory: 11864kb
input:
1000 1000 1000000000
output:
1782317138.808375835419
result:
ok found '1782317138.8083758', expected '1782317138.8083761', error '0.0000000'
Test #5:
score: 0
Accepted
time: 1ms
memory: 3988kb
input:
1 4 5
output:
3.750000000000
result:
ok found '3.7500000', expected '3.7500000', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3828kb
input:
4 1 5
output:
3.750000000000
result:
ok found '3.7500000', expected '3.7500000', error '0.0000000'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3928kb
input:
1 1 1000000000
output:
0.000000000000
result:
ok found '0.0000000', expected '0.0000000', error '-0.0000000'
Test #8:
score: 0
Accepted
time: 1ms
memory: 3792kb
input:
1 2 1000000000
output:
250000000.000000000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3924kb
input:
2 1 1000000000
output:
250000000.000000000000
result:
ok found '250000000.0000000', expected '250000000.0000000', error '0.0000000'
Test #10:
score: 0
Accepted
time: 1ms
memory: 3920kb
input:
1 2 1
output:
0.250000000000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3992kb
input:
2 1 1
output:
0.250000000000
result:
ok found '0.2500000', expected '0.2500000', error '0.0000000'
Test #12:
score: 0
Accepted
time: 1ms
memory: 5908kb
input:
1 10 3
output:
6.750000000000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #13:
score: 0
Accepted
time: 0ms
memory: 4008kb
input:
10 1 3
output:
6.750000000000
result:
ok found '6.7500000', expected '6.7500000', error '0.0000000'
Test #14:
score: 0
Accepted
time: 15ms
memory: 11664kb
input:
997 993 998244353
output:
1779941051.346159458160
result:
ok found '1779941051.3461595', expected '1779941051.3461628', error '0.0000000'
Test #15:
score: 0
Accepted
time: 3ms
memory: 11392kb
input:
988 313 886183312
output:
78753022570.483337402344
result:
ok found '78753022570.4833374', expected '78753022570.4833527', error '0.0000000'
Test #16:
score: 0
Accepted
time: 2ms
memory: 9004kb
input:
583 286 322190846
output:
8636356976.843711853027
result:
ok found '8636356976.8437119', expected '8636356976.8437138', error '0.0000000'
Test #17:
score: 0
Accepted
time: 9ms
memory: 11620kb
input:
892 468 494964816
output:
17125998682.729242324829
result:
ok found '17125998682.7292423', expected '17125998682.7292328', error '0.0000000'
Test #18:
score: 0
Accepted
time: 0ms
memory: 4088kb
input:
26 882 386682745
output:
78231677700.750427246094
result:
ok found '78231677700.7504272', expected '78231677700.7504883', error '0.0000000'
Test #19:
score: 0
Accepted
time: 11ms
memory: 11016kb
input:
867 926 422131798
output:
945100500.399107098579
result:
ok found '945100500.3991071', expected '945100500.3991071', error '0.0000000'
Test #20:
score: 0
Accepted
time: 1ms
memory: 5996kb
input:
37 68 19
output:
62.284459880159
result:
ok found '62.2844599', expected '62.2844599', error '0.0000000'
Test #21:
score: 0
Accepted
time: 0ms
memory: 3988kb
input:
23 90 80
output:
860.050698735791
result:
ok found '860.0506987', expected '860.0506987', error '0.0000000'
Test #22:
score: 0
Accepted
time: 1ms
memory: 4076kb
input:
43 55 85
output:
118.389267967564
result:
ok found '118.3892680', expected '118.3892680', error '0.0000000'
Test #23:
score: 0
Accepted
time: 1ms
memory: 4340kb
input:
93 66 43
output:
97.904840858751
result:
ok found '97.9048409', expected '97.9048409', error '0.0000000'
Test #24:
score: 0
Accepted
time: 1ms
memory: 6092kb
input:
78 93 30
output:
44.845452326451
result:
ok found '44.8454523', expected '44.8454523', error '0.0000000'
Test #25:
score: 0
Accepted
time: 0ms
memory: 3964kb
input:
9 5 481032867
output:
400507342.366738319397
result:
ok found '400507342.3667383', expected '400507342.3667384', error '0.0000000'
Test #26:
score: 0
Accepted
time: 0ms
memory: 8464kb
input:
366 73 3
output:
149.486464233096
result:
ok found '149.4864642', expected '149.4864642', error '0.0000000'
Test #27:
score: 0
Accepted
time: 0ms
memory: 3948kb
input:
6 4 5
output:
2.894645169729
result:
ok found '2.8946452', expected '2.8946452', error '0.0000000'
Test #28:
score: 0
Accepted
time: 0ms
memory: 3956kb
input:
8 10 5
output:
3.397360852475
result:
ok found '3.3973609', expected '3.3973609', error '0.0000000'
Test #29:
score: 0
Accepted
time: 1ms
memory: 4024kb
input:
10 1 7
output:
15.750000000000
result:
ok found '15.7500000', expected '15.7500000', error '0.0000000'
Test #30:
score: 0
Accepted
time: 0ms
memory: 3964kb
input:
10 7 10
output:
7.371646607394
result:
ok found '7.3716466', expected '7.3716466', error '0.0000000'
Test #31:
score: 0
Accepted
time: 0ms
memory: 3864kb
input:
2 8 1
output:
1.327106919466
result:
ok found '1.3271069', expected '1.3271069', error '0.0000000'