QOJ.ac
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 |
|---|---|---|---|---|---|---|---|---|---|
| #509592 | #8022. Walker | Xunwuqishi# | WA | 0ms | 3944kb | C++20 | 2.0kb | 2024-08-08 16:24:07 | 2024-08-08 16:24:08 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define lowbit(x) x&(-x)
#define int long long
#define double long double
const int N = 2e5+10;
double INF = 1e9;
int mod = 1e6+7;
//int mod = 1e9+7;
//int ways[4][2] = {{1,0},{-1,0},{0,1},{0,-1}};
double n,a,b,av,bv,ans;
void solve() {
cin>>n>>a>>av>>b>>bv;
if(a > b)
{
swap(a,b);
swap(av,bv);
}
double t;
ans = 4e18l;
ans = fmin(ans,(n + n - a) / av);
ans = fmin(ans,(n + n - b) / bv);
ans = fmin(ans,(a + n) / av);
ans = fmin(ans,(b + n) / bv);
t = (b - a) / (av + bv);
ans = fmin(ans,t + fmax((a + t * av) / av,(n - b + t * bv) / bv));
ans = fmin(ans,t + fmax((n - b + t * bv) / av,(a + t * av) / bv));
ans = fmin(ans,fmax((n - b) / bv,(b + a) / av));
ans = fmin(ans,fmax(a / av,(n - b + n - a) / bv));
ans = fmin(ans,fmax((n - b) / bv,(b - a + b - a + a) / av));
ans = fmin(ans,fmax(a / av,(b - a + b - a + n - b) / bv));
if(a / av > (n - b) / bv)
{
double tt = a / av;
double x = tt * bv - (n - b);
double xx = (av * (n - a - x) - a * bv) / (av + bv);
ans = fmin(ans,tt + (a + xx) / av);
}else
{
double tt = (n - b) / bv;
double x = tt * av - a;
double xx = (av * (n - a) - bv * (a - x)) / (av + bv);
ans = fmin(ans,tt + (a - x + xx) / av);
}
double xx = (av * (2.0 * (b - a) + n - b) - a * bv) / (2.0 * (av + bv));
// for(double i = a;i <= b;i = i + 0.01)
// {
// cout<<max((2 * i + a) / av,(2 * (b - a - i) + n - b) / bv)<<'\n';
// }
// cout<<xx<<endl;
if(xx >= 0.0 && xx <= b - a)
{
ans = fmin(ans,(2 * xx + a) / av);
}
cout<<ans<<endl;
}
signed main() {
std::ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
cout<<fixed<<setprecision(10);
int caset = 1;
cin>>caset;
for(int i = 1;i<=caset;i++)
{
solve();
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3944kb
input:
2 10000.0 1.0 0.001 9999.0 0.001 4306.063 4079.874 0.607 1033.423 0.847
output:
5001000.0000000000 3827.8370013755
result:
ok 2 numbers
Test #2:
score: 0
Accepted
time: 0ms
memory: 3896kb
input:
1 10.0 1.0 10.0 9.0 0.1
output:
1.1000000000
result:
ok found '1.1000000', expected '1.1000000', error '0.0000000'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3932kb
input:
1 10.0 8.0 10.0 9.0 0.1
output:
1.2000000000
result:
ok found '1.2000000', expected '1.2000000', error '0.0000000'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3688kb
input:
1 10.0 8.0 0.1 9.0 10
output:
1.1000000000
result:
ok found '1.1000000', expected '1.1000000', error '0.0000000'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3928kb
input:
1 10.0 2.0 0.1 3.0 10
output:
1.3000000000
result:
ok found '1.3000000', expected '1.3000000', error '0.0000000'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
1 10.0 9.0 0.1 8.0 10.0
output:
1.2000000000
result:
ok found '1.2000000', expected '1.2000000', error '0.0000000'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
1 10.0 4.0 0.1 6.0 0.1
output:
60.0000000000
result:
ok found '60.0000000', expected '60.0000000', error '0.0000000'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3900kb
input:
1 10.0 4.5 0.1 6.0 0.1
output:
57.5000000000
result:
ok found '57.5000000', expected '57.5000000', error '0.0000000'
Test #9:
score: 0
Accepted
time: 0ms
memory: 3800kb
input:
1 10.0 1.0 1.0 8.0 1.0
output:
6.5000000000
result:
ok found '6.5000000', expected '6.5000000', error '0.0000000'
Test #10:
score: -100
Wrong Answer
time: 0ms
memory: 3876kb
input:
1 10.0 3.0 2.0 7.0 1.0
output:
4.6666666667
result:
wrong answer 1st numbers differ - expected: '4.6000000', found: '4.6666667', error = '0.0144928'