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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 |
|---|---|---|---|---|---|---|---|---|---|
| #377737 | #3994. Easy Jump | hl666 | WA | 1ms | 4064kb | C++17 | 1.6kb | 2024-04-05 17:08:48 | 2024-04-05 17:08:49 |
Judging History
answer
#include<cstdio>
#include<iostream>
#include<cmath>
#define double long double
#define RI register int
#define CI const int&
using namespace std;
const int N=1005;
const double INF=1e18;
int n,H,S,p[N],k,x,T1,T2,st[N]; double P[N];
namespace Case1
{
double f[N][10];
inline void solve(void)
{
for (RI i=n,j;i>=1;--i) for (j=2;j<=H;++j)
if (j>2) f[i][j]=1.0+f[i+1][j]*P[i]+f[i][j-1]*(1.0-P[i]);
else f[i][j]=(1.0+f[i+1][j]*P[i]+T2*(1.0-P[i]))/P[i];
printf("%.12Lf",f[1][H]);
}
};
namespace Case2
{
double f[N][10][10];
inline void solve(void)
{
for (RI i=n,j,k,x;i>=1;--i)
{
if (st[i])
{
for (j=2;j<=H;++j) for (f[i][j][S]=INF,x=0;x<=H;++x)
{
if (j+x>H) continue;
for (k=0;k<=S;++k)
{
if (st[i+1]&&k!=S) continue;
if (j>2) f[i][j][S]=min(f[i][j][S],1.0+(f[i+1][j+x][k]+T1*x)*P[i]+f[i][j-1][S]*(1.0-P[i]));
else f[i][j][S]=min(f[i][j][S],(1.0+(f[i+1][j+x][k]+T1*x)*P[i]+T1*(1.0-P[i]))/P[i]);
}
}
} else
{
for (j=2;j<=H;++j) for (k=0;k<=S;++k)
{
if (j>2) { f[i][j][k]=1.0+f[i+1][j][k]*P[i]+f[i][j-1][k]*(1.0-P[i]); continue; }
if (k>0) f[i][j][k]=1.0+f[i+1][j][k]*P[i]+(f[i][j][k-1]+T1)*(1.0-P[i]);
else f[i][j][k]=(1.0+f[i+1][j][k]*P[i]+T2*(1.0-P[i]))/P[i];
}
}
}
printf("%.12Lf",f[1][H][S]);
}
};
int main()
{
RI i; for (scanf("%d%d%d",&n,&H,&S),i=1;i<=n;++i)
scanf("%d",&p[i]),P[i]=1.0*p[i]/100.0;
for (scanf("%d",&k),i=1;i<=k;++i) scanf("%d",&x),st[x]=1;
scanf("%d%d",&T1,&T2);
if (S==0||T2<=T1) Case1::solve(); else Case2::solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3872kb
input:
1 2 0 50 0 1 2
output:
4.000000000000
result:
ok found '4.0000000', expected '4.0000000', error '0.0000000'
Test #2:
score: 0
Accepted
time: 1ms
memory: 3892kb
input:
2 3 1 50 50 1 1 1 3
output:
6.000000000000
result:
ok found '6.0000000', expected '6.0000000', error '0.0000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3828kb
input:
1 6 4 75 0 64 6
output:
1.341145833333
result:
ok found '1.3411458', expected '1.3411458', error '0.0000000'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3908kb
input:
1 5 1 61 1 1 15 43
output:
2.208223196721
result:
ok found '2.2082232', expected '2.2082232', error '0.0000000'
Test #5:
score: 0
Accepted
time: 1ms
memory: 3876kb
input:
10 9 3 12 65 76 33 17 20 89 16 4 63 3 2 4 8 73 21
output:
942.414842012843
result:
ok found '942.4148420', expected '942.4148420', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3948kb
input:
10 6 0 26 6 29 76 92 46 8 4 91 44 1 4 17 6
output:
401.866862981977
result:
ok found '401.8668630', expected '401.8668630', error '0.0000000'
Test #7:
score: -100
Wrong Answer
time: 1ms
memory: 4064kb
input:
100 3 5 85 59 20 75 58 42 79 95 22 15 95 81 69 73 45 42 99 93 58 8 18 34 88 14 23 37 87 16 96 17 40 58 32 26 93 9 37 15 68 49 99 73 48 79 16 27 52 4 66 53 48 55 27 56 52 66 25 30 34 11 97 20 38 30 4 78 17 98 4 23 30 71 87 94 89 71 45 92 72 24 90 24 78 48 62 82 30 30 27 55 64 66 41 72 53 97 59 38 80 ...
output:
262.379915742117
result:
wrong answer 1st numbers differ - expected: '13395.8550625', found: '262.3799157', error = '0.9804134'